Katy Perry & Frank Ocean Guested On John Mayer's New Album, 'Paradise Valley'Katy Perry will be featured on "a country-tinged mid-tempo track titled 'Who You Love'" while Frank Ocean will lend his voice on "Wildfire."
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Katy Perry Is John Mayer’s 'Teenage Dream'
Style Files: Who Wore Punk Best At The Met Gala?From Miley Cyrus to Beyonce, who was the punkest of them all at the Met ball?
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Perez Hilton All Access: Katy Perry