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The Biggest Celebrity Breakups of 2011

From Ashlee Simpson & Pete Wentz to Demi Moore & Ashton Kutcher, see the star pairs who called it quits this year (33 Photos)

Ali Gray on Dec 7, 2011 at 5:44PM

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Katy Perry & Russell Brand

Pop star Katy Perry and husband Russell Brand announced the end of their one-year marriage on Dec. 30, after Brand filed for divorce in Los Angeles. "Sadly, Katy and I are ending our marriage," the British comedian said in a statement to People. "I'll always adore her and I know we'll remain friends." The couple, who tied the knot in October 2010 in India, had been spotted without their wedding rings in the days leading up to their big announcement.