Check out all the white carpet action from the 2012 Billboard Music Awards held at MGM Grand in Las Vegas on May 20.
The world's biggest stars were out in force, including Katy Perry, Usher, Justin Bieber, LMFAO, Amber Rose, Miley Cyrus and more!
Photos: Getty/ Getty Images Entertainment/ Frazer Harrison
Live stream: Backstage at the 2012 Billboard Music AwardsBillboard Music Awards winners list 2012
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