OK, so Halloween is fast-approaching (it's this Friday, people, in case you haven't been spending all your spare time concocting the perfect ensemble). If you've been too busy, there's still plenty of time to nail your lewk with the help of these stars. Luckily, Hollywood started celebrating the big night this past weekend, which means there's endless inspo from babes like Cindy Crawford and Ashley Madekwe - and there's no reason to go as a sexy librarian (unless you're into that, of course). Boo-tiful looks ahead!