John Mayer opens up about the many female artists who have dissed him in song. He should really stop dating singers.
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Katy Perry performs "Birthday" at the 2014 Billboard Music Awards. Check it out!
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Lady Gaga takes to Twitter to call out Katy Perry for copying her look and stage show for her new tour.
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We can add Katy Perry and Rihanna to the list of celebrity BFF breakdowns. An insider has the dirt on Katy's ex-boyfriend, John Mayer meet up with Rihanna.
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Katy Perry and Diplo are apparently dating. That comes as a surprise and yet not.
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The video for Katy's new single Birthday. The clip shows us several different sides of the star.
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In a teaser for her upcoming 'Birthday' music video, Katy Perry has pulled out all the stops-and all the wigs- to become some of the World's Worst Birthday Party Entertainers!
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Katy Perry causes a car accident in hilarious 'Birthday' music video teaser!
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Katy Perry reveals on Jimmy Kimmel Live that she shot her new music video in disguise.
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Katy on the late night talk show. She makes a surprising confession to a fan.
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Katy Perry and Robert Pattinson dating rumors have surfaced again, after the two were seen getting close at Coachella.
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Katy Perry and John Mayer have broken up. It's a sad, sad day.
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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