While Perry started off with her back to the camera, the “Chained to the Rhythm” singer then swung around to show off her much-talked about Maison Margiela number, with dramatic and somewhat spooky music playing to match her bold look.
Vogue magazine editor Anna Wintour kept things simple, standing in one spot in her sparkly Chanel gown, while Smith was anything but still as he pranced his way around the booth wearing Louis Vuitton and clutching his dreads.
The 18-year-old son of actor Will Smith raved away to a trippy tune against alternating red, black and white backdrops.
Quantico star Priyanka Chopra pulled a classic over-the-shoulder turn against a pretty, floral background, while Serena Williams took her baby bump for a twirl in her gorgeous green Atelier Versace gown.
Sisters Kim Kardashian West and Kylie and Kendall Jenner, meanwhile, posed against the wall, with a cameo from rapper A$AP Rocky.