Billboard Music Awards 2012: Show pics
A star-studded line-up of artists hit the stage at this year's massive Billboard Music Awards 2012 in Las Vegas
Some of this year's big winners include Katy Perry, Taylor Swift, Justin Bieber, Wiz Khalifa, LMFAO and Chris Brown.
Photos: Getty/ Getty Images Entertainment/ Ethan
Billboard Music Awards 2012: Backstage and press room photos
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