(ANGELA WEISS/AFP/Getty Images)
The Met Gala is fashion's biggest night and this year's theme was "Heavenly Bodies: Fashion and the Catholic Imagination."
The gala, which is annually held on the first Monday in May, was hosted by Rihanna, Amal Clooney, Donatella Versace, Anna Wintour and Stephen and Christine Schwarzman.
Given the theme, there was a lot of religious imagery, complete with headpieces and lots of crosses.
Here are some of the takeaways:
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Like a prayer: for someone who has been, by her own admission, ex-communicated by the catholic church a couple of times, Madonna was positively present and correct in her Jean Paul Gaultier gown. For someone who regularly pushes dress codes to the limit, it was a demure ensemble for the star, who was performing at the event.
Photograph: Charles Sykes/Invision/AP
Image copyright AFP Image caption Katy Perry wears oversized angel wings in honour of this year's heavenly theme
The Met Gala, the benefit event for the Metropolitan Museum of Art's Costume Institute, is considered the highlight of New York's social calendar, attracting fashion designers and stars from around the world.
It is known for its expensive tickets, exclusive guest list, and extravagant outfits that are based around a different theme each year.
This year, the theme is Heavenly Bodies: Fashion and the Catholic Imagination, which showcases how Catholicism has influenced fashion throughout history.
Celebrities hit the red carpet on Monday night, sporting papal-inspired gowns, chainmail costumes reminiscent of the Crusades and in singer Katy Perry's case - oversized angel wings.
Image copyright PA Image caption Rihanna wears a papal-inspired gown in honour of this year's theme
Image copyright PA Image caption Actress Olivia Munn dons a chainmail dress
Image copyright AFP/Getty Images Image caption Singer Grimes and her partner, entrepreneur Elon Musk. She wore a necklace based on the logo of his company, Tesla
Image copyright Reuters Image caption Ready Player One and Master of None actress Lena Waithe in a veil inspired by the rainbow flag
Image copyright Reuters Image caption Actor George Clooney arrives with his wife, Amal Clooney, who is a co-host of this year's gala
"Fashion and religion have long been intertwined, mutually inspiring and informing one another," curator Andrew Bolton said in a statement on The Met's website.
"Although this relationship has been complex and sometimes contested, it has produced some of the most inventive and innovative creations in the history of fashion."
Image copyright EPA Image caption Princess Beatrice attended in a purple, floor-length gown
Image copyright AFP Image caption Vogue Editor-in-Chief Anna Wintour, who co-chairs the event, described her dress as "Cardinal Chanel"
Image copyright Getty Images Image caption Takeoff, Offset, and Quavo of American hip trio Migos arrive in vibrant tuxedos
Image copyright Getty Images Image caption Actress Frances McDormand (L), Valentino designer Pierpaolo Piccioli (C) and actress Anne Hathaway (R) appear together on the red carpet
Image copyright Getty Images Image caption NFL quarterback Tom Brady and his wife, Gisele Bundchen, appear on the red carpet
