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0Katy Perry - World's Worst Birthday Party Entertainers ("Birthday" Music Video Preview)

KatyPerryVEVO wrote: Katy Perry - World’s Worst Birthday Party Entertainers (“Birthday” Music Video Preview) Get “Birthday” from Katy Perry’s PRISM: http://smarturl.it/PRISM See more of the World’s Worst Birthday Party Entertainers when the official video for Katy Perry’s “Birthday” premieres on 4/24/14. Follow Katy: http://www.katyperry.com http://youtube.com/katyperry http://twitter.com/katyperry http://facebook.com/katyperry http://instagram.com/katyperry