The pink, I think, but the hand on hip identipose makes them all look kind of dumb.

Audrina looks beautiful,and has an amazing tan that the white dress really brings out.

And Fox overdoes it like she always does. The Con is just not that formal, the nerd would love her in a paper bag. She never looks like she is having fun, she's in permanent vamp mode. Kristen's dress has more of a sci-fi edge and she looks game, so I'll give it to her.

I wish people would stop wearing those fugly Louboutins.

I love the pink on Ashley. But Kristen looks great, too.

I love Kristen's dress, and I agree with superninja that Megan Fox is trying too hard.

Kristin, by a LONG shot. Audrina's tan just looks too dark, too orange, and too fake. Ashley's dress would be adorable if it were just that much more tailored to her body, and Megan Fox just looks like a tramp. As always. Sometimes being understated is the way to go, sweetheart.

Ashley is adorable!

I think Kristen looks great. I really dislike those Loboutins Audrina has, they look like stripper shoes.

Ashley's, it's just simple and cute

I love the pink on Ashley!

no contest, Kristen Bell. I'm a huge forest green fan, and I never find anything that color.

though Ashley Green's shoes are fab.

definitely ashley!! her pink dress is cute enough, but those jimmy choos are just fabulous!!

Kristen, though I must admit I have a weakness for Herve Ledger.

Megan looks stunning and I also like Kristen's outfit (the mossy-tone dress is beautiful.)

None.

Ashley looks best IMO, then Kristen.

Audrina

They are way overdressed for the event!

Are they serious?

I'm not impressed with any of them. I want to vote for Kristen just because I love her, but I am SO tired of Herve Leger.

I love megans look she looks great. tho audrina looks way dressed up. I also love the green dress on Kristen.

I have such a girl crush on Kristen and she looks very fab here, although I like Audrina and Ashley's dresses as well. I'm kinda over Megan Fox right now.

Kristen definitely! Audrina looks nice, but I think her dress is a little too loose. Ashley's look is a little bland, could've used a necklace maybe to spice things up. Megan's hair and makeup looks hot, but her outfit is a little predictable and boring. I think Kristen looks cute but not overdone.

Ashley's dress is a bit loose. Kristen's was perfect!

I think the pink is the cutest! But what is up with all the knee-length dresses?... Megan's look just doesn't do anything for me.

I like all the looks, but Ashley looks the best, in my opinion.

Kristin's dress is so cute. I love the neckline.

I picked Kristen - her dress is great. Audrina looks like she is going to a luncheon. Love the color of Ashleys dress and her makeup but I feel like the dress shape is unflattering. Megan looks evil as usual. She looks good but talk about how a nasty scowl can ruin a look! She needs to chill out.

Kristen hands down. The tan is too much. The pink dress is nice, just a poor fit, pretty face and make-up though. And Megan always looks inconvienianced about being famous, like she is above it all, and that gets old. She is a gorgeous woman though, she just needs to losen up, its her personality that turns people off from her (women) not her looks.

Foxy Fox!