All the stars came out Sunday night for the 2011 American Music Awards, but of course we couldn't keep our eyes off of Hollywood's hottest guys!  So that leave us with the question we need YOUR help deciding - who looked best!?

Joe Jonas, Justin Bieber and Adam Lambert all rocked totally different red carpet styles at the AMAs.  Bieber went for the most dressed up look of the three, arriving on the red carpet with his girlfriend Selena Gomez in a velvet black tux, with matching black bowtie and black sneakers.  The most shocking part of Biebs' look, though, was the slicked back hairstyle, much different from the messy, shorter locks we've seen him sporting the past few weeks!

Justin Bieber at the 2011 AMAs

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Compared to Bieber, Joe Jonas went for a much more casual red carpet look!  The newly solo Jonas Brother wore dark gray jeans with a sheer black shirt and open black jacket, rocking a little bit scruff, too, for his walk down the AMA red carpet.  Jonas will be presenting the big award for Best New Artist at tonight's award show.

Joe Jonas at 2011 AMAs

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Not surprisingly, Adam Lambert went for the most bold American Music Awards red carpet look of the three men!  Arriving in a gray, sparkly get-up, Lambert covered his sparkly pants, vest and tie with an open black trenchcoat.  The American Idol runner-up spiked up his dark hair, as usual, and definitely made a statement on the red carpet.

Adam Lambert at 2011 AMAs

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Which guy do you think dressed best at the 2011 American Music Awards?!