This year, why not skip the last minute costume scrambling and go with a look you're familiar with? That is, one inspired by your favorite star! Thanks to Katy, Kim and Coach Sylvester, this year has had plenty of costume-worthy moments. And we've done all the work for you, narrowing down the best celebs to imitate and some key pieces to buy. Just think—your costume might just be a cupcake bra away!