The singer shared the custom conical bodice Jean Paul Gaultier made for her to wear to this year's event.
The star-studded red carpet event was postponed due to the coronavirus pandemic.
This year's event may no longer be going ahead, but we can still mark the occasion with a rundown of RiRi's fashion.
Our entertainment team round up this week's highlights, featuring the camp outfits at the 2019 Met Gala, the coffee cup gaffe in Game of Thrones and the ups and downs in The Sunday Times Rich List.
They kept it fairly simple, but with a few camp touches thrown in for good measure.
She well and truly embodied the "camp" theme of the fashion bash.
As if celebs needed any encouragement to be over the top, this year’s Met Gala embraced the kitschy and the gaudy with this year’s theme “Camp: Notes On Fashion”. Lady Gaga stole the show with what can only be described as a red-carpet performance, and she revealed four different costumes along with a lot of theatrical posing. Editor of Vogue Anna Wintour hosts the ball every year to raise money for the Costume Institute at the Metropolitan Museum of Art.
And four of them belonged to Lady Gaga.
Susan Sontag's essay "Notes on 'Camp'" informed the 2019 Met Gala. Here's what that could look like on the red carpet.