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.
Neil Patrick Harris and David Burtka
Total family fun! Neil Patrick Harris and David Burtka's twins, Harper and Gideon, completed their costumes as the Bride of Frankenstein and a giant bunny rabbit by providing the bride's hair and the bunny's ears.