The costume: Snookie » What you’ll need: Too-dark foundation, a sizable pouf and some classy Joyce Leslie threads » Bonus points: A jar of pickles » Your catchphrase: “I’m looking for a juicehead.” » Make it a group: With a little hair gel (OK, a lot of hair gel) and some Ed Hardy T-shirts The costume: Lady Gaga » What you’ll need: Sky-high shoes, a sparkling lingerie set and any Ikea lighting fixture you can reasonably attach to your head » Bonus points: A teacup » Your catchphrase: Something inappropriate about your fun-size Kit-Kat » Make it a group: With a decapitated-Muppet Gaga and a meat-dress Gaga The costume: Edward Cullen » What you’ll need: Super light foundation, a fantastic blow-dryer and a quick Blue Steel look at the ready » Bonus points: Gold contacts » Your catchphrase: “Let’s snuggle and talk about your feelings.” » Make it a group: With a sad girl in a hoodie The costume: Katy Perry » What you’ll need: Perky cupcakes, a bra and some strong adhesive » Bonus points: Tickle Me Elmo » Your catchphrase: “I still kissed a girl, remember?” » Make it a group: With a shabby, crazy-eyed, lanky date The costume: Justin Bieber » What you’ll need: A flat-iron and a baseball cap » Bonus points: A cheesy peace sign pose » Your catchphrase: “But mom … ” » Make it a group: With a pack of screaming girls The costume: Joan Holloway » What you’ll need: The absolute tightest tweed pencil skirt H&M has to offer » Bonus points: A pen necklace » Your catchphrase: “SterlingCooperDraperPryce.” Coo it. Even more. » Make it a group: With an obedient, smitten man sporting a lipstick-stained collar
