Paul McCartney and his second wife, ex-model Heather Mills, announced their separation on Wednesday (May 17), ending an almost four-year marriage and blaming others -- namely the media's invasion of their lives -- as a cause of the rift. NBC reports that the former Beatle refused Mills' offer to sign a prenup, which could entitle her to up to a quarter of billionaire McCartney's fortune.

On the Web: Paul McCartney official site

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