Paris Hilton enters the arena before the start of the world welterweight championship bout between Floyd Mayweather Jr., and Manny Pacquiao, on Saturday, May 2, 2015 in Las Vegas.(Photo: AP)
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Actor Bradley Cooper watches before the start of the world welterweight championship bout between Floyd Mayweather Jr., and Manny Pacquiao, on Saturday, May 2, 2015 in Las Vegas. (Photo: AP)
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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: AFP)
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Justin Bieber in attendance during the world welterweight championship bout between Floyd Mayweather and Manny Pacquiao at MGM Grand Garden Arena. (Photo: Mark J. Rebilas-USA TODAY Sports)
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Matt Blank, Ruth Wilson, and David Nevins pose on the red carpet at the Mayweather VS. Pacquiao VIP Pre-Fight Party at MGM Grand on Saturday, May 2, 2015, in Las Vegas. (Photo: AP)
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Actor Jake Gyllenhaal watches the action before the start of the world welterweight championship bout between Floyd Mayweather Jr., and Manny Pacquiao, on May 2, 2015 in Las Vegas. (Photo: AP)
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Comedian Jimmy Kimmel joins the crowd before the start of the world welterweight championship bout between Floyd Mayweather Jr., and Manny Pacquiao, on Saturday, May 2, 2015 in Las Vegas. (Photo: AP)
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Actor Mark Wahlberg (C) attends the Floyd Mayweather Jr vs Manny Pacquiao fight in a welterweight unification bout on May 2, 2015 in Las Vegas, Nevada. (Photo: AFP)
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Jaime Foxx sings the US national anthem before the start of the Floyd Mayweather Jr., vs Manny Pacquiao welterweight unification fight on May 2, 2015 in Las Vegas, Nevada. (Photo: AFP)
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Reggie Miller and Charles Barkley pose for the shutterbugs at the Mayweather vs Pacquiao VIP Pre-Fight Party at MGM Grand on Saturday, May 2, 2015, in Las Vegas, Nev. (Photo: AP)
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Joshua Jackson and Diane Kruger pose on the red carpet at the Mayweather VS. Pacquiao VIP Pre-Fight Party at MGM Grand on Saturday, May 2, 2015, in Las Vegas. (Photo: AP)
