CelebrityGrammy Awards 2012
John Shearer/WireImage
Wildest Grammys Looks of All Time
FEBRUARY 13, 2012
Katy Perry, 2012
The triple-nominee started her performance in a poison green alien costume for "ET" before stripping down to a formfitting metallic unitard to sing her new power anthem "Part of Me."
Next: Nicki Minaj, 2012
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