Their costumes ranged from a black fairy to Jesse from Toy Story – no two celebs had the same disguise!
Looks like all of Hollywood had a good time on Halloween! The celebs were tweeting about their night, from Ian Somerhalder who dressed up like his on-screen brother Paul Wesley, to Kris Jenner who transformed herself into a sexy Queen of Hearts. (We bet her hubby Bruce loved that one!)
Click through to see all the pics of celebs in their costumes, including Lady Gaga as a little monster, Ciara as a sexy sailor, and Rihanna as… sexy Shakespeare?