London, Sep 11 American singer Katy Perry says she is obsessed with British singer Leona Lewis.
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Katy Perry finally speaks up on divorce: 'I'm happy'
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Katy Perry parties with Giants
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John Mayer says his relationship with Katy Perry feels human
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Katy Perry and Russell Brand hire cat whisperer
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Russell Brand and Katy Perry throw engagement party
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Katy Perry plans healing holiday
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Katy Perry and Russell Brand fuel rumors they are expecting baby
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Katy Perry supported by Rihanna
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Katy Perry dating Baptiste Giabiconi!
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Katy Perry backs Rebecca Ferguson to win X Factor
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Katy Perry tries to be a 'better version' of herself