John Mayer, Skrillex & More Dress Up For Katy Perry's Haunted Birthday Party At Magic Castle

Jeremy Scott While it's not even in the top half of costumes at this party, we can definitely respect that he's just about the only person to incorporate the obvious theme of "magic" into his outfit, given where this party was taking place. Maybe for his next trick, he can make all references to his racist sneaker controversy disappear from the internet.