Pop singer Katy Perry got into the Christmas spirit at the Y100 Jingle Ball concert Saturday (Dec 11) by wearing a sexy Mrs. Clause inspired outfit as she performed for the annual event, held this year at the BankAtlantic Center in Sunrise, FL.

Other performers included Selena Gomez, Jay Sean, Enrique Iglesias, Flo Rida, B.o.B and more. Kim Kardashian even made an appearance on stage!

Check out 10+ pics from the Y100 Jingle Ball 2010 concert below…

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