Katy Perry performs "Dark Horse" with an assist from Juicy J at the 2014 Grammy Awards.
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Katy Perry debuts her new single "Part of Me" live at the 2012 Grammy Awards. Is there a little dig at Russell in there?
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Katy Perry Biography

Katy Perry, Blonde Hair Photo Katy Perry kissed a girl and she liked it, ladies and gentlemen. Or at least she wrote a song with those lyrics. The Californa... More »
Born
Birthplace
Santa Barbara, California
Full Name
Katheryn Elizabeth Hudson