Mariah Carey, Nick Cannon, Ashley Greene And Others Bring Out Their Best For Halloween

When you're a huge star, sometimes it may seem like every day is Halloween: the elaborate clothes, the constant need to perform, the surreal mix of flash bulbs and eerie silence. That didn't stop a bevy of musicians and actors from hopping into a costume and heading out to high-profile Halloween parties. Top prize goes to Mariah Carey and Nick Cannon, who showed up to the party at New York's M2 Ultra Lounge dressed as angels (likely a play on Carey's recent album title Memoirs of an Imperfect Angel).

Ice-T and his wife Coco took a different tactic when coming up with their couple-centric costume, as they decided to pose as a dominatrix and a gimp at the same party in New York. A few blocks away, the Heroes vs. Villains party at the Gramercy Park Hotel saw appearances from Cat de Luna (who came as Medusa) and Alexa Chung and Agyness Deyn, who partied as Wayne and Garth.

Over in Los Angeles, Heidi Klum hosted her annual Halloween party and arrived to the fete with husband Seal. They were both dressed as ravens, obviously because they appreciate Edgar Allen Poe, Joe Flacco and Raven-Symoné. Guests there included "Dollhouse" star Eliza Dushku and boyfriend Rick Fox, who appeared as zombie versions of Bonnie and Clyde. And Gavin Rossdale and Gwen Stefani didn't commit themselves to a party, preferring instead to take their kids trick-or-treating. The two kids were dressed as dinosaurs, while Stefani donned a cowgirl costume and Rossdale went as himself circa 1998.

Click here for the best of celebrity Halloween costumes, including Mariah Carey, Ashley Greene and Audrina Patridge!

Who had the best celebrity Halloween costume? Leave your thoughts in the comments!