Kate Hudson drew an A-list crowd to her annual Halloween bash in LA on Thursday night. Guests included Katy Perry, who stole the show in her giant Cheeto costume; Jessica Alba, who dressed up as Slash; and Nicole Richie, who channeled Cruella de Vil. Gwen Stefani and Gavin Rossdale both dressed up as glittering vampires, which was apparently a popular look as Courteney Cox‘s fiancé (and Snow Patrol guitarist) Johnny McDaid was also dressed as a bloodsucking creature. Lily Allen kicked up a bit of controversy when she arrived in a “Dr. Luke” costume, referencing the music producer Kesha is currently suing for sexual assault and battery. Lily was dressed in a green ensemble with a name tag that read “Dr. Luke, Gynecology Department.” Meanwhile, inside the bash, Kate Hudson pulled out a sexy look by dressing as a scantily clad Sons of Anarchy biker alongside her mom, Goldie Hawn.