编辑“︁Lady Gaga”︁（章节）

=== 2018年–2020年：電影《一個巨星的誕生》、《神彩》与拉斯维加斯駐唱===
[[File:Lady Gaga at the 2018 Toronto International Film Festival (cropped 1).jpg|thumb|upright|left|alt=女神卡卡穿著勃艮第酒紅的單肩洋裝，看向右邊的照片。|女神卡卡在《[[一個巨星的誕生]]》首次上映前出席[[2018年多倫多國際影展]]。]]
同年3月，卡卡發聲表示支持於首都[[华盛顿哥伦比亚特区|華府]]進行的，由高中生發起的[[槍枝管制]]聲訴活動 March for Our Lives。<ref>{{cite magazine|url=https://www.billboard.com/articles/news/8259218/jennifer-lopez-jimmy-fallon-lady-gaga-sponsor-buses-to-march-for-our-lives-gun-control-violence|title=Jennifer Lopez, Jimmy Fallon, Lady Gaga Sponsor Buses to March for Our Lives|first=Katie|last=Kilkenny|magazine=Billboard|date=2018-03-24|accessdate=2018-05-09|archive-date=2018-05-11|archive-url=https://web.archive.org/web/20180511184446/https://www.billboard.com/articles/news/8259218/jennifer-lopez-jimmy-fallon-lady-gaga-sponsor-buses-to-march-for-our-lives-gun-control-violence|dead-url=no}}</ref>並同時釋出了收錄於知名歌手[[艾爾頓·強]]的致敬專輯《Revamp》中的歌曲《Your Song》翻唱版。<ref>{{cite news|last1=Kreps|first1=Daniel|title=Hear Lady Gaga's Powerful Take on Elton John's 'Your Song'|url=https://www.rollingstone.com/music/news/hear-lady-gagas-powerful-take-on-elton-johns-your-song-w518545|accessdate=2018-03-30|work=Rolling Stone|date=2018-03-30|archiveurl=https://web.archive.org/web/20180330164158/https://www.rollingstone.com/music/news/hear-lady-gagas-powerful-take-on-elton-johns-your-song-w518545|archivedate=2018-03-30|deadurl=no}}</ref>之後，她本人宣布正在參與由男演員[[布萊德利·庫柏]]翻拍自電影《星海浮沉錄》(1937年) 的最新版本 (2018年)。電影中，她所飾演的新人歌手艾莉在劇中與資深歌手傑克森·緬因 (布萊德利·庫柏飾演)相戀，但其戀情卻因為艾莉的事業成就高過傑克森而開始產生裂痕。<ref>{{cite magazine |last1=Lang |first1=Brent |title=First Look at Lady Gaga and Bradley Cooper in 'A Star Is Born' |magazine=Variety |date=2017-04-17 |url=https://variety.com/2017/film/news/lady-gaga-bradley-cooper-star-is-born-photo-1202032227/ |accessdate=2017-07-13 |deadurl=no |archiveurl=https://web.archive.org/web/20170426225059/http://variety.com/2017/film/news/lady-gaga-bradley-cooper-star-is-born-photo-1202032227/ |archivedate=2017-04-26 }}</ref>庫柏看到卡卡於癌症研究募捐活動的表演後便試著與她接觸；卡卡表示當初她會同意這項計畫是因為她非常讚賞庫柏的作品以及電影劇本中對[[成癮行為|成癮]]和[[抑鬱症|抑鬱]]的描寫。<ref>{{cite news|title='A Star Is Born': Our intimate conversation with Lady Gaga and Bradley Cooper|url=https://ew.com/movies/2018/08/31/a-star-is-born-lady-gaga-bradley-cooper-interview/|accessdate=2018-08-31|work=Entertainment Weekly|date=2018-08-31|archive-date=2018-09-01|archive-url=https://web.archive.org/web/20180901112537/https://ew.com/movies/2018/08/31/a-star-is-born-lady-gaga-bradley-cooper-interview/|dead-url=no}}</ref><ref>{{cite magazine|last1=Tailor|first1=Leena|title=How Lady Gaga Conquered Music, Fashion and Film in Just a Decade|url=https://www.etonline.com/how-lady-gaga-conquered-music-fashion-and-film-fall-preview-106993|accessdate=2018-09-04|magazine=Entertainment Tonight|date=2018-09-04|archive-date=2018-09-04|archive-url=https://web.archive.org/web/20180904225726/https://www.etonline.com/how-lady-gaga-conquered-music-fashion-and-film-fall-preview-106993|dead-url=no}}</ref>同年8月，該片於[[第75屆威尼斯影展]]首次亮相，並隨後將在 10月於全球同步釋出。<ref>{{cite magazine |title=Venice: Lady Gaga on Bradley Cooper Bringing Out Her "Vulnerability" for 'A Star Is Born' |url=https://www.hollywoodreporter.com/news/lady-gaga-acting-debut-bradley-coopers-a-star-is-born-venice-film-festival-1138897 |accessdate=2018-08-31 |work=The Hollywood Reporter |date=2018-08-31 |archive-date=2018-08-31 |archive-url=https://web.archive.org/web/20180831160321/https://www.hollywoodreporter.com/news/lady-gaga-acting-debut-bradley-coopers-a-star-is-born-venice-film-festival-1138897 |dead-url=no }}</ref>《[[衛報]]》的彼得‧布萊德修以「驚人的可觀」形容這部片並提到「卡卡飾演平凡人至外星名人女皇的能力達到最高水準。」<ref>{{cite news |last1=Bradshaw |first1=Peter |title=A Star Is Born review – Lady Gaga mesmerises in Streisand's shoes |url=https://www.theguardian.com/film/2018/aug/31/a-star-is-born-review-lady-gaga-bradley-cooper |accessdate=2018-08-31 |work=The Guardian |date=2018-08-31 |archive-date=2018-08-31 |archive-url=https://web.archive.org/web/20180831185911/https://www.theguardian.com/film/2018/aug/31/a-star-is-born-review-lady-gaga-bradley-cooper |dead-url=no }}</ref>雜誌《[[時代雜誌|時代]]》的史蒂芬妮‧札克雷克與前者一樣強調並讚美她「強力的演技」，並同時讚美她在片中發現到當卡卡卸下妝容、假髮和衣著時所具有的「獨特魅力」。<ref>{{cite magazine |title=Lady Gaga Delivers a Knockout Performance in 'A Star Is Born' |url=http://time.com/5382763/a-star-is-born-review/ |accessdate=2018-08-31 |magazine=Time |date=2018-08-31 |archive-date=2018-08-31 |archive-url=https://web.archive.org/web/20180831225603/http://time.com/5382763/a-star-is-born-review/ |dead-url=no }}</ref>除了奧斯卡獎[[奧斯卡最佳女主角獎|最佳女主角]]的提名，卡卡以飾演女主角艾莉贏得了[[評論家選擇電影獎最佳女主角|評論家選擇電影獎]]以及{{tsl|en|National Board of Review Award for Best Actress|國家評論協會獎最佳女主角|國家評論協會}}的獎項，並於[[英國電影學院獎最佳女主角|英國電影學院獎]]、[[金球奖剧情类电影最佳女主角|金球獎]]以及[[美國演員工會獎最佳女主角|美國演員工會獎]]獎項提名。<ref name="a star is born awards and nominations">Awards and nominations for ''A Star Is Born'':

*Academy Awards: {{cite news|last=Macke|first=Johnni|title=Oscars 2019 Winners: The Complete List|url=https://www.eonline.com/news/1014844/oscars-2019-winners-the-complete-list|accessdate=2019-02-25|publisher={{tsl|en|E! News||E! News}}|date=2019-02-24|archive-date=2019-02-25|archive-url=https://web.archive.org/web/20190225083934/https://www.eonline.com/news/1014844/oscars-2019-winners-the-complete-list|dead-url=no}}
*BAFTA Awards: {{cite news|url=https://www.theguardian.com/film/2019/jan/09/the-full-list-of-nominations-for-the-baftas-2019|title=The full list of nominations for the Baftas 2019|newspaper=The Guardian|date=2019-01-09|accessdate=2019-01-09|archive-date=2019-01-09|archive-url=https://web.archive.org/web/20190109114504/https://www.theguardian.com/film/2019/jan/09/the-full-list-of-nominations-for-the-baftas-2019|dead-url=no}}
*Critics' Choice Awards: {{cite magazine|last=Tapley|first=Kristopher|url=https://variety.com/2019/film/awards/2019-critics-choice-awards-winners-nominees-full-list-1203106702/|title='Roma,' 'The Americans' and 'The Marvelous Mrs. Maisel' Win Top Critics' Choice Honors|magazine=Variety|date=2019-01-13|accessdate=2019-01-14|archive-date=2019-01-14|archive-url=https://web.archive.org/web/20190114010818/https://variety.com/2019/film/awards/2019-critics-choice-awards-winners-nominees-full-list-1203106702/|dead-url=no}}
*Golden Globe Awards: {{cite magazine|url=https://www.hollywoodreporter.com/lists/2019-golden-globes-winners-list-1172257/item/best-motion-picture-drama-1165128|title=2019 Golden Globes Winners: Complete List|date=2019-01-06|magazine=The Hollywood Reporter|access-date=2019-01-07|archive-date=2019-01-07|archive-url=https://web.archive.org/web/20190107124504/https://www.hollywoodreporter.com/lists/2019-golden-globes-winners-list-1172257/item/best-motion-picture-drama-1165128|dead-url=no}}
*National Board of Review Awards: {{cite web|url=http://www.nationalboardofreview.org/2018/11/national-board-review-announces-2018-award-winners/|title=National Board of Review Announces 2018 Award Winners|date=2018-11-27|website=[[國家評論協會|National Board of Review]]|accessdate=2018-12-01|archive-date=2018-11-27|archive-url=https://web.archive.org/web/20181127234332/http://www.nationalboardofreview.org/2018/11/national-board-review-announces-2018-award-winners/|dead-url=no}}
*Screen Actors Guild Awards: {{cite web|last=Nordyke|first=Kimberly|title=SAG Awards: Full List of Nominations|url=https://www.hollywoodreporter.com/lists/2019-sag-nominations-complete-list-1166352|work=The Hollywood Reporter|date=2018-12-12|accessdate=2018-12-12|archive-date=2018-12-12|archive-url=https://web.archive.org/web/20181212161240/https://www.hollywoodreporter.com/lists/2019-sag-nominations-complete-list-1166352|dead-url=no}}</ref>

卡卡和庫柏為了這部電影共同寫詞及製作[[一個巨星的誕生 (2018年版原聲帶)|《一個巨星的誕生》電影原聲帶]]的所有歌曲，錄製時，女神卡卡表示她堅持原聲帶的每首歌都要現場錄唱。<ref>{{cite web|last=Hay|first=Carla|url=https://www.axs.com/a-star-is-born-2018-remake-soundtrack-has-17-original-songs-from-lady--133018|title='A Star Is Born' 2018 remake soundtrack has 17 original songs from Lady Gaga and Bradley Cooper|publisher=AXS|date=2018-08-30|accessdate=2018-09-11|archive-date=2020-04-17|archive-url=https://web.archive.org/web/20200417065642/https://www.axs.com/a-star-is-born-2018-remake-soundtrack-has-17-original-songs-from-lady--133018|dead-url=no}}</ref><ref>{{cite news |last1=Hughes |first1=Hilary |title=Bradley Cooper Calls Lady Gaga's 'A Star Is Born' Performance 'A Revelation' |url=https://www.billboard.com/articles/news/8363332/bradley-cooper-interview-a-star-is-born-lady-gaga-tribeca-film-festival |accessdate=2018-09-04 |work=Billboard |date=2018-04-21 |archive-date=2018-06-23 |archive-url=https://web.archive.org/web/20180623220247/https://www.billboard.com/articles/news/8363332/bradley-cooper-interview-a-star-is-born-lady-gaga-tribeca-film-festival |dead-url=no }}</ref>原聲帶收錄34首曲目，其中包含19首歌曲，原聲帶獲得普遍的好評；<ref>{{cite web|title=A Star Is Born [Original Motion Picture Soundtrack] by Lady Gaga|url=https://www.metacritic.com/music/a-star-is-born-original-motion-picture-soundtrack/lady-gaga/details|publisher=[[Metacritic]]|accessdate=2018-10-15|archive-date=2018-10-18|archive-url=https://web.archive.org/web/20181018030059/https://www.metacritic.com/music/a-star-is-born-original-motion-picture-soundtrack/lady-gaga/details|dead-url=no}}</ref>《[[華盛頓郵報]]》的馬克·肯迪尼將原聲帶稱為「五星級的奇蹟」，而《[[衛報]]》的本·博蒙特·托馬斯將專輯稱為「充斥卡卡情感的即時經典」。<ref name="TWP">{{cite news|last=Kennedy|first=Mark|title=Review: 'A Star Is Born' soundtrack is a five-star marvel|url=https://www.washingtonpost.com/entertainment/music/review-a-star-is-born-soundtrack-is-a-five-star-marvel/2018/10/04/6956aef2-c7e2-11e8-9c0f-2ffaf6d422aa_story.html|date=2018-10-04|accessdate=2018-10-15|newspaper=The Washington Post|archiveurl=https://web.archive.org/web/20181005030735/https://www.washingtonpost.com/entertainment/music/review-a-star-is-born-soundtrack-is-a-five-star-marvel/2018/10/04/6956aef2-c7e2-11e8-9c0f-2ffaf6d422aa_story.html|archivedate=2018-10-05|dead-url=no}}</ref><ref>{{cite news|url=https://www.theguardian.com/music/2018/oct/05/a-star-is-born-soundtrack-review-lady-gaga-bradley-cooper|title=A Star Is Born soundtrack review&nbsp;– instant classics full of Gaga's emotional might|last=Beaumont-Thomas|first=Ben|date=2018-10-05|accessdate=2018-10-15|work=The Guardian|archive-date=2018-10-14|archive-url=https://web.archive.org/web/20181014210839/https://www.theguardian.com/music/2018/oct/05/a-star-is-born-soundtrack-review-lady-gaga-bradley-cooper|dead-url=no}}</ref>卡卡也因原聲帶而獲得了{{tsl|en|BAFTA Award for Best Film Music|英國電影和電視藝術學院最佳電影音樂獎}}。<ref>{{cite web|title=BAFTA Awards: 'The Favourite' Dominates With 7 Wins, But 'Roma' Claims Top Prize 2019|url=https://www.hollywoodreporter.com/lists/bafta-award-winners-2019-complete-list-1178566|work=[[荷里活報道|The Hollywood Reporter]]|date=2019-02-10|accessdate=2019-02-10|archive-date=2019-02-11|archive-url=https://web.archive.org/web/20190211002045/https://www.hollywoodreporter.com/lists/bafta-award-winners-2019-complete-list-1178566|dead-url=no}}</ref>商業上，原聲帶首周於美國奪冠，使卡卡成為了2010年後在美國唯一擁有5張冠軍專輯的女性，並作為10年後十年內最多冠軍專輯的女性歌手打破了與[[泰勒絲]]的平局。<ref>{{cite magazine|last=Caulfield|first=Keith|title=Lady Gaga & Bradley Cooper's 'A Star Is Born' Soundtrack Debuts at No. 1 on Billboard 200 Albums Chart|url=https://www.billboard.com/articles/columns/chart-beat/8479831/a-star-is-born-soundtrack-no-1-debut-billboard-200|magazine=Billboard|date=2018-10-14|accessdate=2018-10-15|archive-date=2018-10-14|archive-url=https://web.archive.org/web/20181014231442/https://www.billboard.com/articles/columns/chart-beat/8479831/a-star-is-born-soundtrack-no-1-debut-billboard-200|dead-url=no}}</ref>另外，原聲帶也於澳洲、加拿大、愛爾蘭、紐西蘭、瑞士以及英國榜單登頂。<ref>Australia: {{cite web|url=https://www.ariacharts.com.au/news/2018/a-star-is-born-soundtrack-jumps-to-1|title=A Star Is Born Jumps To #1|publisher=Australian Recording Industry Association|date=2018-10-27|accessdate=2018-10-27|archive-date=2018-10-27|archive-url=https://web.archive.org/web/20181027143844/https://www.ariacharts.com.au/news/2018/a-star-is-born-soundtrack-jumps-to-1|dead-url=no}}<br>Canada: {{cite magazine|url=https://www.billboard.com/music/Lady-Gaga/chart-history/canadian-albums|title=Lady Gaga Chart History: Billboard Canadian Albums|magazine=Billboard|accessdate=2018-11-05|archive-date=2018-10-15|archive-url=https://web.archive.org/web/20181015161656/https://www.billboard.com/music/lady-gaga/chart-history/canadian-albums|dead-url=no}}<br>Ireland: {{cite news|url=https://www.officialcharts.com/chart-news/the-a-star-is-born-soundtrack-bests-twenty-one-pilots-for-official-irish-albums-chart-number-1__24433/|title=The A Star Is Born soundtrack bests Twenty One Pilots for Official Irish Albums Chart Number 1|last=White|first=Jack|date=2018-10-12|accessdate=2018-10-12|publisher=Official Charts Company|archive-date=2019-02-18|archive-url=https://web.archive.org/web/20190218141733/https://www.officialcharts.com/chart-news/the-a-star-is-born-soundtrack-bests-twenty-one-pilots-for-official-irish-albums-chart-number-1__24433/|dead-url=no}}<br>New Zealand: {{cite web|url=https://charts.nz/showitem.asp?interpret=Soundtrack+%2F+Lady+Gaga+%2F+Bradley+Cooper&titel=A+Star+Is+Born&cat=a|title=Charts.org.nz – Soundtrack / Lady Gaga / Bradley Cooper – A Star Is Born|publisher=Hung Medien|accessdate=2018-11-05|archive-date=2018-11-06|archive-url=https://web.archive.org/web/20181106053246/https://charts.nz/showitem.asp?interpret=Soundtrack+%2F+Lady+Gaga+%2F+Bradley+Cooper&titel=A+Star+Is+Born&cat=a|dead-url=no}}<br>UK: {{cite news|url=https://www.officialcharts.com/chart-news/lady-gaga-tops-official-albums-chart-for-fourth-time-thanks-to-a-star-is-born__24436/|title=Lady Gaga tops Official Albums Chart for fourth time thanks to A Star Is Born|last=Myers|first=Justin|date=2018-10-12|accessdate=2018-10-12|publisher=Official Charts Company|archive-date=2019-01-06|archive-url=https://web.archive.org/web/20190106224725/https://www.officialcharts.com/chart-news/lady-gaga-tops-official-albums-chart-for-fourth-time-thanks-to-a-star-is-born__24436/|dead-url=no}}</ref>同月後期，卡卡宣布她已與於2017年早期相遇的人才仲介克里斯提安·卡里諾訂婚。<ref>{{cite news|url=https://www.cnn.com/2018/10/16/entertainment/lady-gaga-engaged/index.html|title=Lady Gaga thanks her 'fiancé' during speech|last=Respers France|first=Lisa|publisher=CNN|date=2018-10-16|accessdate=2018-10-16|archive-date=2018-10-16|archive-url=https://web.archive.org/web/20181016225124/https://www.cnn.com/2018/10/16/entertainment/lady-gaga-engaged/index.html|dead-url=no}}</ref>並於2019年2月取消訂婚。<ref>{{cite news|url=https://eu.usatoday.com/story/life/people/2019/02/19/lady-gaga-and-christian-carino-call-off-their-engagement/2919698002/|title=Lady Gaga and Christian Carino call off their engagement ahead of the Academy Awards|last=Henderson|first=Cydney|date=2019-02-19|accessdate=2019-02-19|newspaper=USA Today|archive-date=2019-10-18|archive-url=https://web.archive.org/web/20191018033147/https://www.usatoday.com/story/life/people/2019/02/19/lady-gaga-and-christian-carino-call-off-their-engagement/2919698002/|dead-url=no}}</ref>

由兩人合唱的原聲帶中首支單曲《[[淺灘 (女神卡卡和布萊德利·庫柏歌曲)|淺灘]]》（Shallow），於9月釋出<ref>{{cite web|last1=Gotrich|first1=Lars|title=Hear 'Shallow,' Lady Gaga's Slow-Burning Power Ballad From 'A Star Is Born'|url=https://www.npr.org/2018/09/27/652124946/hear-shallow-lady-gaga-s-slow-burning-power-ballad-from-a-star-is-born|publisher=NPR|date=2018-09-27|accessdate=2018-10-09|archive-date=2018-10-10|archive-url=https://web.archive.org/web/20181010040331/https://www.npr.org/2018/09/27/652124946/hear-shallow-lady-gaga-s-slow-burning-power-ballad-from-a-star-is-born|dead-url=no}}</ref>並於多國榜單奪冠。<ref>Australia: {{cite web|url=https://www.ariacharts.com.au/news/2018/lady-gaga-and-bradley-cooper-hit-1-with-shallow|title=Lady Gaga and Bradley Cooper hit #1 with Shallow|publisher=Australian Recording Industry Association|date=2018-10-27|accessdate=2018-10-27|archive-date=2018-10-27|archive-url=https://web.archive.org/web/20181027101819/https://www.ariacharts.com.au/news/2018/lady-gaga-and-bradley-cooper-hit-1-with-shallow|dead-url=no}}<br>Austria: {{cite web|url=https://austriancharts.at/showitem.asp?interpret=Lady+Gaga+%26+Bradley+Cooper&titel=Shallow&cat=s|title=Lady Gaga & Bradley Cooper – Shallow|publisher=austriancharts.at. Hung Medien|language=de|accessdate=2018-10-31|archive-date=2018-10-13|archive-url=https://web.archive.org/web/20181013095013/https://austriancharts.at/showitem.asp?interpret=Lady+Gaga+%26+Bradley+Cooper&titel=Shallow&cat=s|dead-url=no}}<br>Ireland: {{cite web|last1=White|first1=Jack|title=Official Irish Singles Chart: Lady Gaga scores her sixth Irish Number 1 single with Bradley Cooper duet Shallow|url=https://www.officialcharts.com/chart-news/official-irish-singles-chart-lady-gaga-scores-her-sixth-irish-number-1-single-with-bradley-cooper-duet-shallow__24432/|publisher=Official Charts Company|date=2018-10-12|accessdate=2018-10-13|archive-date=2018-10-14|archive-url=https://web.archive.org/web/20181014225611/https://www.officialcharts.com/chart-news/official-irish-singles-chart-lady-gaga-scores-her-sixth-irish-number-1-single-with-bradley-cooper-duet-shallow__24432/|dead-url=no}}<br>New Zealand: {{cite web|url=https://nztop40.co.nz/chart/singles?chart=4547|title=NZ Top 40 Singles Chart|publisher=[[新西兰唱片音乐协会|Recorded Music NZ]]|date=2018-11-05|accessdate=2018-11-02|archive-date=2018-11-03|archive-url=https://web.archive.org/web/20181103131329/https://nztop40.co.nz/chart/singles?chart=4547|dead-url=no}}<br>Sweden: {{cite web|url=https://swedishcharts.com/showitem.asp?interpret=Lady+Gaga+%26+Bradley+Cooper&titel=Shallow&cat=s|title=Swedishcharts.com – Lady Gaga & Bradley Cooper – Shallow|publisher=Hung Medien|accessdate=2018-11-05|archive-date=2018-10-08|archive-url=https://web.archive.org/web/20181008022855/https://swedishcharts.com/showitem.asp?interpret=Lady+Gaga+%26+Bradley+Cooper&titel=Shallow&cat=s|dead-url=no}}<br>Switzerland: {{cite web|title=Hitparade.ch – Lady Gaga & Bradley Cooper – Shallow|url=http://swisscharts.com/song/Lady-Gaga-&-Bradley-Cooper/Shallow-1799181|publisher=Hung Medien|accessdate=2018-10-16|deadurl=no|archiveurl=https://web.archive.org/web/20181016212312/http://swisscharts.com/song/Lady-Gaga-%26-Bradley-Cooper/Shallow-1799181|archivedate=2018-10-16}}<br>UK: {{cite web|url=https://www.officialcharts.com/chart-news/lady-gaga-and-bradley-cooper-score-the-official-chart-double-as-shallow-becomes-gagas-fifth-uk-number-1-__24565/|title=Lady Gaga and Bradley Cooper score the Official Chart double as Shallow becomes Gaga's fifth UK Number 1|publisher=Official Charts Company|last=Myers|first=Justin|date=2018-10-26|accessdate=2018-10-26|archive-date=2018-10-26|archive-url=https://web.archive.org/web/20181026222615/https://www.officialcharts.com/chart-news/lady-gaga-and-bradley-cooper-score-the-official-chart-double-as-shallow-becomes-gagas-fifth-uk-number-1-__24565/|dead-url=no}}<br>US: {{cite magazine|url=https://www.billboard.com/articles/columns/chart-beat/8479913/lady-gaga-bradley-cooper-hot-top-10-hot-100|title=Maroon 5 & Cardi B's 'Girls Like You' Tops Hot 100 For Fourth Week, Lady Gaga & Bradley Cooper Hit Top 10|last=Trust|first=Gary|date=2018-10-15|accessdate=2018-10-15|magazine=Billboard|archive-date=2018-10-16|archive-url=https://web.archive.org/web/20181016000433/https://www.billboard.com/articles/columns/chart-beat/8479913/lady-gaga-bradley-cooper-hot-top-10-hot-100|dead-url=no}}</ref>2019年2月11日，卡卡於葛萊美頒獎禮上首次於電視直播上表演《[[淺灘 (女神卡卡和布萊德利·庫柏歌曲)|淺灘]]》，以《淺灘》獲頒{{tsl|en|Grammy Award for Best Song Written for Visual Media|最佳影視媒體作品歌曲}}及{{tsl|en|Grammy Award for Best Pop Duo/Group Performance|最佳流行團體 / 組合}}兩大獎項。<ref name=2019Grammys>{{cite magazine|url=https://www.hollywoodreporter.com/lists/grammys-2019-winners-live-updating-list-1178567/item/best-song-written-visual-media-1165448|title=2019 Grammy Winners: Complete List|accessdate=2019-02-10|magazine=The Hollywood Reporter|date=2019-02-10|archive-date=2019-02-12|archive-url=https://web.archive.org/web/20190212011807/https://www.hollywoodreporter.com/lists/grammys-2019-winners-live-updating-list-1178567/item/best-song-written-visual-media-1165448|dead-url=no}}</ref><ref>{{Cite web|title=女神卡卡以〈Shallow〉拿下葛萊美兩項大獎！上台落淚致詞：如果你受傷了，即使很難，也請你挖掘內心深處的勇氣⋯|url=https://www.elle.com/tw/entertainment/gossip/g26280054/lady-gaga-wins-grammy-shallow/|work=ELLE|date=2019-02-11|accessdate=2019-02-27|language=zh-TW|first=Inna|last=Chou|archive-date=2020-11-20|archive-url=https://web.archive.org/web/20201120081526/https://www.elle.com/tw/entertainment/gossip/g26280054/lady-gaga-wins-grammy-shallow/|dead-url=no}}</ref>同日，《淺灘》榮獲[[英國電影學院獎|英國電影學院]]頒發最佳原創音樂，由 [[布萊德利·庫柏]]於英國領獎。<ref>{{Cite web|title=BAFTA Awards 2019: Music and soundtrack winners announced|url=https://www.classicfm.com/discover-music/bafta-awards-2019-music-and-soundtrack-nominees/|work=Classic FM|accessdate=2019-02-11|language=en|archive-date=2020-11-20|archive-url=https://web.archive.org/web/20201120081517/https://www.classicfm.com/discover-music/bafta-awards-2019-music-and-soundtrack-nominees/|dead-url=no}}</ref>同月25日，卡卡於[[奥斯卡金像奖|奧斯卡金像獎]]頒獎禮上與[[布萊德利·庫柏]]首次於電視直播上合唱《淺灘》，並憑《淺灘》獲頒最佳原創歌曲。<ref>{{Cite web|title=【奧斯卡】《星夢情深》Lady Gaga奪最佳主題曲 (11:55) - 20190225 - SHOWBIZ|url=https://ol.mingpao.com/ldy/showbiz/latest/20190225/1551066904895/%e3%80%90%e5%a5%a7%e6%96%af%e5%8d%a1%e3%80%91%e3%80%8a%e6%98%9f%e5%a4%a2%e6%83%85%e6%b7%b1%e3%80%8blady-gaga%e5%a5%aa%e6%9c%80%e4%bd%b3%e4%b8%bb%e9%a1%8c%e6%9b%b2|work=明報OL網|accessdate=2019-02-27|language=zh-hant|archive-date=2020-11-20|archive-url=https://web.archive.org/web/20201120081548/https://ol.mingpao.com/ldy/showbiz/latest/20190225/1551066904895/%E3%80%90%E5%A5%A7%E6%96%AF%E5%8D%A1%E3%80%91%E3%80%8A%E6%98%9F%E5%A4%A2%E6%83%85%E6%B7%B1%E3%80%8Blady-gaga%E5%A5%AA%E6%9C%80%E4%BD%B3%E4%B8%BB%E9%A1%8C%E6%9B%B2|dead-url=no}}</ref>典禮完結後，卡卡前往瑪丹娜主辦的派對並拍下合照引起粉絲及媒體議論。<ref>{{Cite web|title=LADY GAGA AND MADONNA END FEUD|url=https://ewn.co.za/2019/02/26/lady-gaga-and-madonna-end-feud/|work=Eyewitness News|accessdate=2019-03-01|language=en|archive-date=2020-10-01|archive-url=https://web.archive.org/web/20201001045748/https://ewn.co.za/2019/02/26/lady-gaga-and-madonna-end-feud|dead-url=no}}</ref>包含以上3項獎項，單曲使卡卡贏得了[[金球獎最佳原創歌曲|金球獎]]和{{tsl|en|Critics' Choice Movie Award for Best Song|廣播影評人協會獎最佳歌曲|評論家選擇電影獎}}等最佳原創歌曲獎。並同時使卡卡成為史上第一位藝人及第一首歌曲於同一獎季贏得[[金球獎]]、[[葛萊美獎]]、[[英国电影学院奖|英國電影學院獎]]及[[奥斯卡金像奖|奧斯卡金像獎]]<ref name="a star is born awards and nominations"/>，並超越歌手[[碧昂絲]]的《女力來襲》（Formation）成為史上獲獎最多的歌曲，至今共獲得32項官方獎項。<ref>{{cite news|url=https://www.mensxp.com/entertainment/hollywood/50589-lady-gaga-won-an-oscar-for-lsquo-shallow-rsquo-created-history-by-making-it-the-most-awarded-song-ever.html|title=Lady Gaga Won An Oscar For 'Shallow' & Created History By Making It The Most Awarded Song Ever|date=2019-02-25|accessdate=2019-03-01|publisher=MensXP|archive-date=2020-12-27|archive-url=https://web.archive.org/web/20201227190124/https://www.mensxp.com/entertainment/hollywood/50589-lady-gaga-won-an-oscar-for-lsquo-shallow-rsquo-created-history-by-making-it-the-most-awarded-song-ever.html|dead-url=no}}</ref>

2018年，卡卡簽下了為期兩年的駐唱合約，並於[[拉斯維加斯]]的[[蒙地卡羅賭場度假村|公園劇場]]舉辦演唱會《女神卡卡: 謎》。<ref name="ewenigma">{{cite magazine|url=http://ew.com/music/2018/08/07/lady-gaga-las-vegas-residency-details/|title=Lady Gaga announces Las Vegas residency show details|last=Nolfi|first=Joel|date=2018-08-07|accessdate=2018-08-07|magazine=Entertainment Weekly|archive-date=2018-08-08|archive-url=https://web.archive.org/web/20180808181342/https://ew.com/music/2018/08/07/lady-gaga-las-vegas-residency-details/|dead-url=no}}</ref>駐唱由兩種不同類型的演唱會組成: 以戲劇性和卡卡熱門歌曲為主要焦點的《謎》，<ref>{{cite news|last=Hale|first=Andreas|title=Lady Gaga Delivers the Show She Was Born to Perform With 'Enigma'|url=https://www.billboard.com/articles/news/8491731/lady-gaga-enigma-opening-night-review|accessdate=2019-01-23|work=Billboard|date=2018-12-29|archive-date=2019-01-12|archive-url=https://web.archive.org/web/20190112085906/https://www.billboard.com/articles/news/8491731/lady-gaga-enigma-opening-night-review|dead-url=no}}</ref>以及以選自{{tsl|en|Great American Songbook|美國金曲簿}}的歌曲以及爵士版的卡卡的歌曲為主的《爵士與鋼琴》。《謎》駐唱表演於2018年12月28日首次開唱，《爵士與鋼琴》則於隔年1月20日開唱。<ref>{{cite news|last=Wood|first=Mikael|title=Review: In Las Vegas, Lady Gaga solves the problem of 'A Star Is Born'|url=https://www.latimes.com/entertainment/music/la-et-ms-lady-gaga-enigma-jazz-piano-las-vegas-review-20190121-story.html|accessdate=2019-01-23|work=[[洛杉磯時報|Los Angeles Times]]|date=2019-01-21|archive-date=2019-01-22|archive-url=https://web.archive.org/web/20190122120331/https://www.latimes.com/entertainment/music/la-et-ms-lady-gaga-enigma-jazz-piano-las-vegas-review-20190121-story.html|dead-url=no}}</ref>2019年9月，卡卡於亞馬遜上發行她的首款純素化妝品系列Haus Laboratories。由40款產品組成，包含液體眼線筆、唇彩和臉部貼紙，產品在亞馬遜的暢銷口紅榜單上排行第一。<ref>{{cite web |last1=Thompson |first1=Courtney |title=Lady Gaga's new holiday lipstick is already No. 1 on Amazon |url=https://us.cnn.com/2019/11/22/cnn-underscored/lady-gaga-haus-sparkle-lipstick/index.html |publisher=CNN |access-date=2019-12-06 |language=en |date=2019-11-23 |archive-date=2020-11-26 |archive-url=https://web.archive.org/web/20201126064232/https://us.cnn.com/2019/11/22/cnn-underscored/lady-gaga-haus-sparkle-lipstick/index.html |dead-url=no }}</ref>隔年2月，卡卡開始與企業家麥可·波蘭斯基交往。<ref>{{Cite web |url=https://www.billboard.com/articles/columns/pop/9361099/lady-gaga-says-boyfriend-michael-polansky-is-the-love-of-my-life |last1=Peters |first1=Mitchell |title=Lady Gaga Says Boyfriend Michael Polansky Is the 'Love of My Life': Watch |date=2020-04-18 |access-date=2020-04-19 |website=[[告示牌 (雜誌)|Billboard]] |archive-url=https://archive.today/20200522102827/https://www.billboard.com/articles/columns/pop/9361099/lady-gaga-says-boyfriend-michael-polansky-is-the-love-of-my-life |archive-date=2020-05-22 |dead-url=no }}</ref>卡卡於2020年2月25日在社群媒體宣布新專輯《神彩》（原文: Chromatica）於2020年4月10日發售，後因[[2019冠状病毒病|COVID-19疫情]]宣布延期至5月29日發售。<ref>{{cite web |title=Lady Gaga Postpones Release of New Album Chromatica |url=https://consequenceofsound.net/2020/03/lady-gaga-postpones-release-of-new-album-chromatica/ |website=[[Consequence of Sounds]] |publisher= |accessdate=2020-03-25 |dead-url=no |archive-date=2020-11-30 |archive-url=https://web.archive.org/web/20201130151113/https://consequenceofsound.net/2020/03/lady-gaga-postpones-release-of-new-album-chromatica/ }}</ref><ref>{{cite web |last=Rettig |first=James |title=Lady Gaga's ''Chromatica'' Is Now Out 5/29 |url=https://www.stereogum.com/2083513/lady-gaga-chromatica-release-date-change/news/ |website=[[立体胶|Stereogum]] |publisher={{tsl|en|Valence Media||Valence Media}} |accessdate=2020-05-07 |archiveurl=https://web.archive.org/web/20200506161939/https://www.stereogum.com/2083513/lady-gaga-chromatica-release-date-change/news/ |archivedate=2020-05-06 |date=2020-05-06 |dead-url=no }}</ref>並在此前發行兩張單曲，2月28日的《癡癡的愛》(Stupid Love)，<ref>{{cite news|last=Rowley|first=Glenn|url=https://www.billboard.com/articles/columns/pop/8551871/lady-gaga-confirms-release-date-stupid-love|title=Lady Gaga Is About to Drop Her New Single 'Stupid Love' and We Are Not Calm: Find Out the Release Date|magazine=[[告示牌 (雜誌)|Billboard]]|date=2020-02-25|accessdate=2020-02-25|archive-date=2020-11-20|archive-url=https://web.archive.org/web/20201120081628/https://www.billboard.com/articles/columns/pop/8551871/lady-gaga-confirms-release-date-stupid-love|dead-url=no}}</ref>以及5月22日，和[[亞莉安娜·格蘭德]]合作的《讓雨降臨》(Rain on Me)。<ref>{{cite web|url=https://www.billboard.com/articles/columns/pop/9379055/lady-gaga-ariana-grande-rain-on-me-release-date|title=Lady Gaga & Ariana Grande's 'Rain on Me' Collaboration Is Coming Really Soon|last=Aniftos|first=Rania|website=[[告示牌 (雜誌)|Billboard]]|date=2020-05-15|accessdate=2020-05-16|archive-date=2020-05-15|archive-url=https://web.archive.org/web/20200515235931/https://www.billboard.com/articles/columns/pop/9379055/lady-gaga-ariana-grande-rain-on-me-release-date|dead-url=no}}</ref>後者於美國空降第一，讓卡卡成為第三名分別在2000年代、2010年代和2020年代登上該國榜首的人。<ref>{{cite web|url=https://www.billboard.com/articles/business/chart-beat/9394719/rain-on-me-debuts-atop-hot-100-lady-gaga-ariana-grande|title=Lady Gaga & Ariana Grande's 'Rain on Me' Debuts at No. 1 on Billboard Hot 100|work=[[告示牌 (雜誌)|Billboard]]|last=Trust|first=Gary|date=2020-06-01|accessdate=2020-06-01|archive-date=2020-06-03|archive-url=https://web.archive.org/web/20200603055218/https://www.billboard.com/articles/business/chart-beat/9394719/rain-on-me-debuts-atop-hot-100-lady-gaga-ariana-grande|dead-url=no}}</ref>隨了憑着《星夢情深》（A Star Is Born）入圍金球影后，她也憑着電影歌曲爭奪4項格萊美獎，加上個人歌曲獎提名，一共獲得5項[[第61屆葛萊美獎]]的提名。<ref>{{cite news |author1=東方日報 |title=GaGa延續金球氣勢擸格林美5提名 |url=https://orientaldaily.on.cc/cnt/entertainment/20181209/00288_001.html |accessdate=2020-07-30 |archive-date=2020-11-20 |archive-url=https://web.archive.org/web/20201120081629/https://orientaldaily.on.cc/cnt/entertainment/20181209/00288_001.html |dead-url=no }}</ref>