We also got to talk to Will.i.am, who is performing with Justin Bieber...and we tried to get him to spill some secrets about what we can expect when they step on stage together.
Unfortunately, Will wouldn't divulge any specific details, but he did say to "watch out," so we think they've definitely got something up their sleeves!
Check out the video above to hear Will tell us about what he's been doing while he's in Vegas and what he's doing right after the awards.
Want more from the stars at the Billboard Music Awards? Cambio has you covered! We've got the Blue Carpet Arrivals, all the Winners, the best backstage moments and more, so keep checking back for updates!
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Gallery | 2013 Billboard Music Awards: Best and Worst Dressed