Lily Allen vs. Katy Perry: When Katy Perry described herself as the "fatter version of Amy Winehouse and the skinnier version of Lily Allen, it was inevitable that the outspoken singer would have something to say about it. Lily's initial response was to threaten that she would post Katy Perry's phone number on Facebook. Branding the American singer as "crass," she then said: "You're not English and you don't write your own songs, shut up!"
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