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Best Celebrity Pranks

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October 12, 2009 - Rick Diamond/Getty Images North America more pics like this »
1. Taylor Swift vs. Keith Urban

Taylor Swift is one girl who doesn't take herself too seriously. She was scheduled to make a guest appearance at a Keith Urban concert in Missouri last year, where was singing "Kiss a Girl," so Taylor and her band came out onstage dressed in full KISS makeup (à la Gene Simmons). She got a good laugh out of Urban for that one.