12th Annual Michael Jordan Celebrity Invitational Gala At ARIA Resort & Casino [Getty Images]

LAS VEGAS, NV - APRIL 05: Olympic swimer Michael Phelps arrives at the 12th Annual Michael Jordan Celebrity Invitational Gala At ARIA Resort & Casino on April 5, 2013 in Las Vegas, Nevada. (Photo by Isaac Brekken/Getty Images for Michael Jordan Celebrity Invitational)

Getty Images Entertainment Isaac Brekken