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.
Lauren Conrad and William Tell
What a fairytale! Newly-engaged Lauren Conrad and her USC law school beau William Tell looked chic as a pretty fairy and a doctor respectively.