Rose McGowan gets into the spirit of Halloween at the L.A. Gay & Lesbian Center’s Annual “Halloweenie” Party, held at Hollywood Forever cemetery.

Funnyman Russell Brand is honored at the Friendly House Annual Awards Luncheon at The Beverly Hilton in Beverly Hills.

Snazzy! David Arquette leaves a Halloween party in Los Angeles dressed as a pimp.

Paris Hilton leaves a Halloween party in Los Angeles dressed as a heroine.

Meow! Nicky Hilton leaves a Halloween party in Los Angeles dressed as sexy leopard.

Kim Kardashian and La La Vasquez are gorgeous gals at Gabrielle’s Angel Foundation for Cancer Research Hosts Angel Ball 2011.

Halle Berry, using a cane after an on-set accident, and Olivier Martinez leave a restaurant together in Berlin, Germany.

Holly Madison hosts “Hollyween” at Studio 54.

The Halloween “Player’s Ball” hosted by Ice-T and Coco at LAX nightclub.

Bridget Marquardt is a sexy bunny on the red carpet before HPNOTIQ Harmonie Liqueur’s Halloween Bash at Gallery Nightclub in Las Vegas.

Patrick Dempsey goes gangsta to Kate Hudson’s Halloween Party at her house in Pacific Palisades, CA.
See more photos of Kate’s party!

This is NOT her prettiest red carpet moment… Heidi Klum arrives on a gurney, minus skin, for the Halloween Party at TAO nightclub in Las Vegas, Nevada.
See more photos Celebs dressed up for Halloween!

‘Jersey Shore’ star DJ Pauly D puts his Halloween face on at Rain Nightclub at The Palms in Las Vegas.

Scott Disick looks devilish despite his costume, with a couture pop in hand, at the Sugar Factory at the Paris Las Vegas.

Bethenny Frankel looked super cute dressed as Hello Kitty for Heidi Klum’s Halloween party in Las Vegas.

Victoria’s Secret model Alessandra Ambrosio sported a purple wig with her Dolce & Gabbana Miss Sicily bag while she took her little princess Anja to a Halloween party.

Katherine Heigl kept her costume to a minimum, wearing all black and a witches hat.

While her mommy Katherine Heigl went casual, little Naleigh Kelly was quite the princess for a Halloween party.

Theresa Guidice with “Ken” at the Pop Art Halloween Party hosted by Designer Marc Bouwer and Director Jerry Murray

Miranda Kerr flaunted her model figure in a lion tamers outfit for a Halloween party in NYC.

Jennifer Garner got in the Halloween spirit and dressed up a witch for the day.

Fergie looked cute for Heidi Klum’s 12th Annual Halloween party in New York City.

Little Honor Warren, daughter of Jessica Alba, look adorable as Princess Jasmine while out with mom and dad on Halloween.

Fergie poses with RadarOnline buddy Tom Murro at Heidi Klum’s 12 Annual Halloween Party in New York.