From Psy's "Gangnam Style" trot to Alicia Keys's "Fire" dance, the stars stepped it up at the Staples Center
Credit: Lester Cohen/WireImage
Updated: Thursday Sep 06, 2012 | 08:30 PM EDT
By: Helin Jung
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From Selena's lace corset to Katy's leopard-print dress, the stars didn't hold back
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In case the command to "Blow Me (One Last Kiss)" didn't come through clearly enough, Pink stomps her feet emphatically to really get her point across.
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