By Kari Arneson
Lady Gaga
It seems impossible that just a couple of years ago, no one had ever heard of Lady Gaga. Â Now the international pop superstar is one of the most stylish and controversial stars of her generation. Â But for Halloween, which outfit (out of thousands) should you choose? Â Try some of her most well-known, like the blue swimsuit from her “Poker Face” music video or one of her famous VMA outfits. Â Warning: Be careful with the meat dress.
The Bachelor
This is the perfect costume for the single guy looking for love.  All you have to do is put on a nice suit and some hair gel, and you’re good to go.  And don’t forget the most important part of the costume: roses.  Hand them out to the cutest girls at the party.
Katy Perry
Nostalgic for the summer?  Now that the weather’s turned cold, celebrate summer 2010 with the artist who delivered its biggest hit.  Dress like Katy Perry in her candy-themed “California Gurls” music video with a blue wig, candy-covered dress and, if you’re feeling adventurous, some whipped cream, too!
Sarah/Bristol Palin
Is teen activist Bristol Palin becoming more famous than her political mom? Â The teen mother is on this season’s Dancing With the Stars, the #1 show on TV, and has millions of fans across the country. Â If you want to go the more traditional route, go with the now-classic Halloween costume: Sarah Palin. Â Hey, it worked for Tina Fey!
Edward Cullen
One of the most popular book series of the past decade, the Twilight Saga, has produced three blockbuster movies so far, rocketing its actors to superstardom.  Robert Pattinson plays the brooding vampire, the romantic lead and the subject of many a teen girl’s fantasies.  Get the look with some white makeup, a gray peacoat and a bouffant hairdo.  All you have to do now is practice your pout.  Add some fangs if you’re feeling daring.
Jersey Shore couple
Although they may not be an actual couple, The Situation and Snooki are undoubtedly the breakout stars of MTV’s Jersey Shore.  Besides the obvious GTL (gym, tan, laundry), get Snooki’s poof with lots of hairspray or a wig.  For the Situation, three words: abs, abs, abs.  You might need some time to prepare for that one…
Justin Bieber
While the Biebs was blowing up the charts this year, Halloween costume-makers were busy making, you guessed it — the Justin Bieber wig.  All you need to complete this costume is some baggy jeans, sweet kicks, and the hair.  Screaming 12-year-old girls are optional.
Kim Kardashian
This reality TV bombshell is one of the most talked-about celebs on the planet.  With her hit show Keeping Up with the Kardashians under her belt and the new Kourtney and Kim Take New York coming soon to a living room near you, the curvy brunette is a perfect costume idea.  Try a wig or extensions to get Kim’s long dark locks, a bandage dress, and if you need it, a little help in the chest area will complete the transformation!
Mad Hatter
If you’re a fan of Johnny Depp and/or huge top hats, this is the costume for you.  Replicate the iconic character played by Depp in this year’s Alice In Wonderland with a tall, raddy-looking hat, long pinstripe pants and a colorful blazer.
Avatar
So a tall blue alien with long hair and very little clothing might not be the most traditional costume, but will no doubt be the most recognizable.  Avatar, the highest-grossing movie ever made, came out last year and the Na’avi people featured in the movie are still all the buzz.  You can find plenty of blue body paint and full Avatar costumes at most Halloween stores.
