Get the Party Started!: The Stars Arrive

Katy & M.I.A, Miley, Jennifer Hudson and more stars rock the night at the Staples Center in L.A.

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HOST WITH THE MOST

Extra's Mario Lopez finds good company in Kim Kardashian on music's biggest night. Perhaps these two Dancing with the Stars alums – Lopez was on season 3, while Kardashian hit the parquet on season 7 – were reminiscing about rumbas?