![Lady Gaga Wears an Alexander McQueen Black Gown and the Legendary 128 Carat Tiffany Diamond to the 2019 Oscars Lady Gaga Wears an Alexander McQueen Black Gown and the Legendary 128 Carat Tiffany Diamond to the 2019 Oscars](https://hips.hearstapps.com/hmg-prod/images/lady-gaga-attends-the-91st-annual-academy-awards-at-news-photo-1127185521-1551055313.jpg)
Lady Gaga Wears an Alexander McQueen Black Gown and the Legendary 128 Carat Tiffany Diamond to the 2019 Oscars
![Oscars 2019: Here's a look at Lady Gaga's past outfits and her style evolution ahead of the big night - Good Morning America Oscars 2019: Here's a look at Lady Gaga's past outfits and her style evolution ahead of the big night - Good Morning America](https://s.abcnews.com/images/GMA/lady-gaga-oscars-file-02-ap-jef-190130_hpEmbed_3x4_992.jpg)
Oscars 2019: Here's a look at Lady Gaga's past outfits and her style evolution ahead of the big night - Good Morning America
![Oscars 2019 Red Carpet: All the Details on Lady Gaga's 128.54-Carat Tiffany & Co. Oscars Necklace | Glamour Oscars 2019 Red Carpet: All the Details on Lady Gaga's 128.54-Carat Tiffany & Co. Oscars Necklace | Glamour](https://media.glamour.com/photos/5c734076e1c64875ba96df94/master/w_1600%2Cc_limit/GettyImages-1127197663.jpg)
Oscars 2019 Red Carpet: All the Details on Lady Gaga's 128.54-Carat Tiffany & Co. Oscars Necklace | Glamour
![Lady Gaga Wears an Alexander McQueen Black Gown and the Legendary 128 Carat Tiffany Diamond to the 2019 Oscars Lady Gaga Wears an Alexander McQueen Black Gown and the Legendary 128 Carat Tiffany Diamond to the 2019 Oscars](https://hips.hearstapps.com/hmg-prod/images/lady-gaga-attends-the-91st-annual-academy-awards-at-news-photo-1127185521-1551055313.jpg?crop=1xw:0.69086xh;center,top&resize=640:*)