Tonight, pop star Justin Bieber will be kicking off his Believe 2012 tour tonight in Glendale, Arizona. Where Bieber is said to be taking the stage with R&B singer Usher Raymond, and rapper Big Sean.

The singer will be performing in-front of millions of screaming female fans at the packed arena, with many reports claim Sean and Usher will be joining him on stage. 

See what the 18 year-old had to say about the tour below:

"There's a lot of fun stuff. I've been really hard at work in the studio, in the dance studio, just kind of figuring out what I want to do as far as choreography and whatnot," "I think the tour's going to be really special. We got a lot of surprises."

Also, his next stop will be at the MGM Grand in Las Vegas tomorrow night.