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May 7, 2015

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Peter Wentz, his wife, Ashlee Simpson-Wentz and her sister, Jessica Simpson, celebrate Simpson-Wentz' 25th birthday at the MGM Grand's Wet Republic, Oct., 3, 2009.

Ethan Miller/Getty Images

Peter Wentz, his wife, Ashlee Simpson-Wentz and her sister, Jessica Simpson, celebrate Simpson-Wentz' 25th birthday at the MGM Grand's Wet Republic, Oct., 3, 2009.