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LAS VEGAS, NV - MAY 02: Beyonce Knowles and Jay-Z attend the welterweight unification championship bout on May 2, 2015 at MGM Grand Garden Arena in Las Vegas, Nevada. (Photo by Al Bello/Getty Images)

LAS VEGAS, NV - MAY 02:  Beyonce Knowles and Jay-Z attend the welterweight unification championship bout on May 2, 2015 at MGM Grand Garden Arena in Las Vegas, Nevada.  (Photo by Al Bello/Getty Images)