Rihanna showed up to the 2017 Met Gala in one of the most show-stopping ensembles of the evening - she nailed the theme, Rei Kawakubo/Comme des Garçons, in an ultra-structured look from the designer that nearly put the actual sculptures in the museum to shame. Comme des Garçons is after all known for its larger-than-life, asymmetrical silhouettes and for presenting fashion as living and breathing sculpture.
Yet, numerous evening's most disappointing looks came not from celebrities who went too far with their fashion choices, but from those who didn't try to follow the theme.
Thankfully Caroline did manage to redeem herself, somewhat, earlier in the day when she joined Vogue Editor-in-Chief Anna to launch the latest Costume Institute exhibit at the Metropolitan Museum of Art.
Completing the look, Katy wore a metallic headpiece which appeared to showcase the word "witness", which has prompted some fans to speculate this could be the name of her upcoming fourth album.
"She paid homage to Rei the way it was intended".
Fellow host Pharrell Williams arrived at the event, dubbed the Oscars of the East Coast, in a pair of ripped Comme des Garcons jeans and a leather jacket.
Several stars were spotted smoking cigarettes in the bathroom during Monday night's Met Gala - which is illegal in New York City.
Take a peek at the hottest women of the 2017 Met Gala below to see who came out for the high-profile event.
But despite not attending the star-studded bash, the insider insisted the "Famous" hitmaker is in "a much better place" than he was past year, and has made "good progress" in getting his mental health back on track.
Take a look at my selection of the Top 10 best dressed stars throughout the years at the Met Gala. In fact, fashion watchers even compared her look to that of Satan.
Other Met-attending celebrities caught smoking in the girls room, so to speak, were Bella Hadid, musician Courtney Love and her daughter Frances Bean Cobain, the Daily Mail said.