The 2008 Z100 Jingle Ball

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Katy Perry

"I'd like to thank Z100 for messing up my life," said Katy Perry—dressed in full sexy Santa apparel and backed up by a band of dressed as holiday elves—before leading the crowd in a sing-a-long of her 2008 anthem, "I Kissed a Girl."

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Katy Perry

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The 2008 Z100 Jingle Ball

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