Kim Kardashian and Kanye West arrive at Kim Kardashian's Halloween party at LIV nightclub at Fontainebleau Miami on October 31th, 2012.
Rihanna attends her naming as the Queen of the West Hollywood Halloween Carnaval by the City of West Hollywood at Greystone Manor Supperclub on October 31th, 2012.
Bebe Rexha and Pete Wentz of Black Cards pose backstage at Yoni & Josh's Halloween Celebration in New York City on October 28th, 2011.
Debbie Harry gives a surprise musical performance at the Beaux Arts Ball in Provincetown, Mass., October 29th, 2011.
Green Day dress in costume to perform an intimate Halloween show in NYC, October 27th, 2011.
Members of Guns N' Roses, DJ Ashba and Frank Ferrer showed an "appetite for destruction" with flesh-rotting scareactors in the Acid Assault scarezone at Halloween Horror Nights in Orlando, Florida, October 26th, 2011.
Marilyn Manson slices into a pumpkin cake at the Halloween Weekend With The "Beautiful People" At The Bank Nightclub at the Bellagio in Las Vegas on October 29th, 2011.
?uestlove parties with a slightly less modelesque version of Heidi Klum at Klum's 12th Annual Halloween Party at TAO Nightclub at the Venetian in Las Vegas on October 29th, 2011.
Rev Run and DJ Ruckus spin Yoni & Josh's Halloween Celebration in NYC on October 28th, 2011.
Musician Adam Levine, model Anne Vyalitsyna, and musician James Valentine attend Bacardi and Maroon 5's Annual Halloween Bash held at Hollywood Forever Cemetary in Hollywood, California on October 31st, 2011.
Fergie attends Heidi Klum's 12th annual Halloween party at Penthouse at Dream Downtown in New York City on October 31st, 2011.
Paul "DJ Pauly D" DelVecchio spins records at the Pacha Halloween party in New York City on October 31st, 2011.
Russell Simmons and Andre Harrell attend Heidi Klum's 12th annual Halloween party at the Penthouse at Dream Downtown in New York City on October 31st, 2011.