He sure is growing up: teen heartthrob sets the stage on fire at music awards show

May 21, 2012 12:29 GMT  ·  By

Justin Bieber is out to prove to the world that he's a grown man from now on and, as such, his performances are getting more serious, more complicated and a bit more sensual, too.

Case in point: his appearance at the 2012 Billboard Awards, where he was also honored with the Top Social Artist award.

The Biebs performed his latest single, “Boyfriend,” the first one to be lifted off the upcoming album, “Believe.”

Compared to his performance of the same song on The Voice season 2 finale, this one had a more mature feel to it: the dancing, the moves, the swagger felt as if they were geared towards older fans.

We dig the show he put on, but Bieber's voice was definitely not top-notch.

No wonder voices online are saying he isn't able to perform this song live, at least, not if he wants to do the complicated dance routine as well.