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.
Spiders galore! Michelle Trachtenberg wore a black dress and oversized hat to celebrate Halloween with orange spiders and spider makeup added for detail.
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