WATCH: Sneak Peek at Demi Lovato's First Televised Performance Since Rehab!

OMG, we are so excited to watch the Do Something Awards tomorrow to see Demi Lovato's big comeback performance. We're loving her first single "Skyscraper" and just know she is going to kill her live performance, especially after seeing a sneak peek of her vocals on the ciip below!

Don't forget: Tune in to VH1 on August 18 at 8pm to catch the Do Something Awards, which honor young people all over the country working to make the world a better place.

Until then, check out this clip below: