LAS VEGAS, NV - JUNE 20: Singer Justin Bieber watches a welterweight fight between Adrien Broner and Shawn Porter at MGM Grand Garden Arena on June 20, 2015 in Las Vegas, Nevada. (Photo by Steve Marcus/Getty Images)
LAS VEGAS, NV - JUNE 20: Singer Justin Bieber watches a welterweight fight between Adrien Broner and Shawn Porter at MGM Grand Garden Arena on June 20, 2015 in Las Vegas, Nevada. (Photo by Steve Marcus/Getty Images)