4 Celeb Halloween Costumes That'll Crack You Up

We've rounded up the most creative, clever, and downright outrageous getups from A-list Halloween parties. Plus, show Cosmo how you rocked your costume and enter to win a makeup set from EyesLipsFace.com!

Christian Siriano
The designer channels the ultimate diva, Cruella de Vil. Hopefully the PETA protesters took the night off.

Christina Aguilera and Jordan Bratman
It's Halloween, not act-out-your-private-bedroom-fantasy night.

Heidi Klum
Catwoman better watch her back. There's a new sex kitten in town. Meow!

Kim Kardashian
and Reggie Bush

In black fishnets, a fringed dress dripping with pearls, and a very dapper gent on her arm, Kim totally rocked the flapper look. Too bad Reggie looks like he'd rather be getting tackled.

Check out more hilarious celeb Halloween pics and get more from Cosmopolitan.com!

Hottest Bachelors of 2009
Yep, it's that time of year again, when we bring you a sizzling-hot collection of single guys from across the country...and not just for your viewing pleasure. We've included e-mail addresses for you to connect with your favorites - on the off chance your love life could use a stimulus package.

Halloween Costumes That Seem Like a Good Idea...but Aren't
Think you've got a genius dress-up idea for this October 31st? Stop a minute and reevaluate. It could be a recipe for disaster. Here, Cosmo's top 10 no-no's.

10 Halloween Costumes That Are Totally 2009
Just like we saw an army of Dark Knight Jokers last year, a band of Michael Jacksons is sure to be out on the 31st this year. But if you're looking for some other ideas that are clever and timely, why not try these inspirations on for size?

What Guys Really Notice About Your Looks
Certain aspects of your appearance might drive you crazy, but trust us, men aren't paying attention. Read on for the surprising news.

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