Brandon Maxwell, who created Gaga's reveal, helped her navigate the stairs at the Metropolitan Museum of Art as she posed with several helpers. Maxwell undressed her further, revealing a black strapless asymmetrical ballgown underneath with a huge side bustle. Then she undressed again to show off a pink dress reminiscent of Marilyn Monroe in "Gentlemen Prefer Blondes," walking up and down the carpet.
But she wasn't done. Moments later, she undressed again to pose in a glittering bra and panties set, with huge platform shoes.
PHOTOS: Fashion at the 2019 Met Gala
Nicki Minaj attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Odell Beckham Jr. attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Zendaya attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Kendall Jenner attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Jennifer Lopez, left, and Alex Rodriguez attend The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition.AP
Gwyneth Paltrow attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Tom Brady, left, and Gisele Bundchen attend The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition.AP
Dwyane Wade, left, and Gabrielle Union attend The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition.AP
Kylie Jenner attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Hailee Steinfeld attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Cardi B attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Gigi Hadid attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Bella Hadid attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Gal Gadot attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Tracee Ellis Ross attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Gwen Stefani attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Kanye West, left, and Kim Kardashian attend The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition.AP
Priyanka Chopra, left, and Nick Jonas attend The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition.AP
Alicia Keys, left, and Swizz Beatz attend The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition.AP
Michael B. Jordan attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Hailey Bieber attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Regina King attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Zoe Saldana attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Benedict Cumberbatch, left, and Sophie Hunter attend The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibitAP
Miley Cyrus attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Shawn Mendes attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Designer Diane von Furstenberg attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition.AP
Katy Perry attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Jared Leto, holding a model of his own head, attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibitAP
Tiffany Haddish attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Rami Malek, left, and Charlotte Gainsbourg attend The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibitionAP
Darren Criss attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Saoirse Ronan attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Ryan Murphy attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Megalyn Echikunwoke, left, and Chris Rock attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibit.AP
Alessia Cara attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Kris Jenner attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Lee Daniels attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Ava DuVernay attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Karlie Kloss attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Omari Hardwick attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Mindy Kaling attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Awkwafina attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Ashley Graham attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Richard Madden attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on Monday, May 6, 2019.AP
Rachel Brosnahan attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on May 6, 2019.AP
Celine Dion attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on May 6, 2019, in New York.AP
Rapper 21 Savage attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on May 6, 2019.AP
Lady Gaga attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on May 6, 2019, in New York.AP
Billy Porter attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on May 6, 2019, in New York.AP
Anna Wintour attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on May 6, 2019.AP
Serena Williams attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition on May 6, 2019.AP
Harry Styles attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the "Camp: Notes on Fashion" exhibition May 6, 2019AP
The Associated Press contributed to this report.