No, please, PLEASE don't do anything from Twilight hoặc Harry Potter, I beg you! Do something from an older movie. Like "Titanic" hoặc "The Phantom of the Opera"*. People would know who bạn were, but bạn wouldn't be dressed up the same as everyone else. I mean, come on, what's worse than going to a Halloween party hoặc a fun ngày hoặc something with the same costume as, like, five other people???!
*You could be the Phantom whether you're a boy hoặc a girl. It still an awesome costume! :D