Paris rocked a black stars and stripes dress, a black lace fingerless glove, strappy sandals, and cat-eye sunglasses. She also held Rita's birthday present in her hand.
Charli XCX looked sweet in an off-the-shoulder black and white gingham print dress, black leather purse, and chunky, silver disco platforms.
Luka Sabbat went cool and casual in his light gray sweatsuit and blue Nikes. He also wore a blue Jaws hat.
Kate Beckinsale modeled a black satin mini-dress adorned with white flowers. She accessorized with a black clutch, satin pumps, and metallic earrings.
Kelly Osbourne was dressed in a comfy sweatshirt and low black pumps. She styled her platinum purple hair in short waves.
Which look of the night was your fave? Sound off in the comments below!