LAS VEGAS, NV - MARCH 15: Singer Justin Bieber arrives to celebrate his 21st birthday at Omnia Nightclub at Caesars Palace on March 15, 2015 in Las Vegas, Nevada. (Photo by Steven Lawton/FilmMagic)
LAS VEGAS, NV - MARCH 15: Singer Justin Bieber arrives to celebrate his 21st birthday at Omnia Nightclub at Caesars Palace on March 15, 2015 in Las Vegas, Nevada. (Photo by Steven Lawton/FilmMagic)