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Audrina Patridge and fellow Dancing With The Stars castmate Brandy attended the launch of Ubisoft's "Just Dance 2" at Las Palmas in Hollywood last night, and even though the ladies have to go through hours of grueling dance practice every day, they don't look worn out at all! Audrina also brought along her goooorgeous boyfriend Corey Bohan, who looks more like an actor and less like a pro BMXer when he's all dressed up:

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Other celebrity guests included porn star Sasha Grey, Whitney Port and Taryn Manning, so click the gallery below for more hotness...