Gwen Stefani & Gavin Rossdale
The cute couple step out in matching vampire costumes.
Robin Roberts
The GMA host channels Frozen's Elsa.
Katy Perry
Yum! Perry is dressed as a delicious Flamin' Hot Cheeto for Kate Hudson's Halloween party.
Taylor Swift
The singer sports a "Pegacorn" costume during a visit to The Elvis Duran Z100 Morning Show.
Kate Hudson & Goldie Hawn
The mother-daughter duo bring the sex appeal at Hudson's annual Halloween bash!
Alessandra Ambrosio
The supermodel and a gal-pal bring the sexy!
Dianna Agron
Va-va-voom! The Glee gal shows lots of cleavage in this black getup.
Jessica Alba
It's the return of' 80s and '90s-era Guns N' Roses! Here she is with friend Kelly Sawyer.
Taylor Lautner
The Twilight fan-favorite poses with Los Angeles Haunted Hayride CEO Melissa Carbone before enjoying the scary attraction.
Lance Bass & Michael Turchin
The duo attend Fred & Jason's 9th Annual Halloweenie party in L.A.
Maria Menounos
Kelly Kapowski! Menounos looks awesome in this Saved by the Bell-inspired look.
Rachel Zoe
The celeb stylist goes as the Evil Queen from Snow White.
Courteney Cox
Eek! Cox dresses as the evil doll from Annabelle.
Liberty Ross
Ross channels her dark side!
Zach Braff
LOL! The Scrubs star sport a mullet.
Carmen Electra
Is that you Katy Perry? The actress does her best "California Gurls" impression for SVEDKA Vodka's Halloween Soirée.
Sarah Hyland
Hyland arrives to Kate Hudon's star-studded bash as Annie.
Bella Thorne
The actress and her friends watch a WhatBrandIsIt.com video to guess the brand and try to win $25K while at Just Jared's Halloween soiree at No Vacancy in Los Angeles.
Elisabetta Canalis
George Clooney's ex flaunts her fit figure while dressed as Dorothy from The Wizard of Oz.
Cindy Crawford & Rande Gerber
The twosome channel Cher and Gregg Allman with these groovy get-ups.
Paris Hilton
Sex snowball? Paris sizzles in this barely there costume.
Guy Ritchie & Rocco Ritchie
The director and his sone make awesome Breaking Bad characters!
Lily Allen
The singer raises eyebrows with her Dr. Luke costume in the wake of Kesha's sexual assauly lawsuit against the producer.
Melissa Gorga
The Real Housewives of New Jersey star celebrates Halloween early with her fam.