Cyrus keeps her pup Sophie close on the L.A. set of her new music video. Plus: Nick & Mariah, Beyoncé, Nicole Kidman and more


Beyoncé channels her alter-ego Sasha during a high-octane performance of her song "Single Ladies (Put a Ring on It)" Sunday at the World Music Awards in Monte Carlo. And it was a good night for the singer: She also picked up an award for her outstanding contribution to the arts.

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