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LAS VEGAS, NV - MAY 17: Pitbull and Chris Brown perform onstage during the 2015 Billboard Music Awards held at the MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Michael Tran/WireImage)

LAS VEGAS, NV - MAY 17:  Pitbull and Chris Brown perform onstage during the 2015 Billboard Music Awards held at the MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada.  (Photo by Michael Tran/WireImage)