Justin Bieber and on-again-off-again-on-again girlfriend Selena Gomez walked the 'blue' carpet separately tonight in Las Vegas at the Billboard Music Awards. The Biebs was all smiles as he arrived and Selena was looking lovely in a white, Atelier Versace full-length dress with neon accents.

Justin performed "Take You" during the show and won the Top Male Artist prize. Congrats, JB!

Meanwhile, Selena also wowed the crowd with her new song "Come & Get It."