It's that time again! Some of the biggest names in Hollywood stepped out to celebrate Halloween 2013, dressed as film characters, other A-listers, comic superheroes and much more! Check out some stars -- including Hilary Duff, Vanessa Hudgens and John Stamos -- who went the extra mile to get decked out for some of the biggest Halloween parties of the season.
Chelsea's pregnant! Well, sort of. The comedian and actress smiled big as she shared a photo via Twitter wearing a fake baby bump for Halloween.