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Perez Hilton vs. Lady Gaga The former BFFs,
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Perez Hilton vs. Lady Gaga
The former BFFs, pictured here in 2009, had a falling out when the blogger asked the singer "really terrible questions and was being very negative about 'Born This Way'" during an interview, according to the singer, who says she felt "betrayed." Their feud has played out on Twitter, with Gaga calling Hilton a "stalker" and him calling her a "real-life vampire."(Credit: Getty Images)

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Biggest celebrity feuds

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