Justin Bieber WINS Social Artist of the Year at Billboard Music Awards!

Justin Bieber hits the white carpet at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on Sunday (May 20) in Las Vegas.

The 18-year-old entertainer is up for four awards tonight and has already won the award for Social Artist of the Year!

Justin beat out Eminem, Lady GaGa, Rihanna, and Shakira for the award.

During his acceptance speech, the young artist went out of his way to thank his manager, Scooter Braun, Usher, his mom, and of course, his fans!

“Getting ready. See everyone tonight on the Billboard Awards,” Justin tweeted.

10+ pics inside…