Inside the club, a guest dressed as an Ozempic injection bopped with a guest dressed as an Uno card. Nearby, someone channeling Mia Thermopolis, the protagonist of “The Princess Diaries,” mingled with a partyer who came as Patrick Bateman of “American Psycho.” The actor Ice-T, in a mask splattered with blood, and his wife, Coco Austin, who was projecting a sultry version of Chucky, lounged on the couches.