We'll be seeing Icona Pop (who wants Taylor Swift to join them), Justin Bieber and Will.i.am (together!) and The Band Perry, just to name a few!
We caught up with The Band Perry on the blue carpet before the show and asked them if they're having any pre-performance jitters...and they confess that they most definitely are.
But they have some really cool stuff planned and they're super excited for everyone to see it.
Check out the video above to hear them spill about exactly what we can expect from their performance and what they would be doing tonight if they weren't at the awards.