Demi Lovato will make her return to the stage at the Do Something Awards, which will air Thursday, August 18, on VH1. It will mark the first time Lovato has publicly performed her hit single "Skyscraper." The singer is up for two awards: Do Something Charity Song and Do Something TV Star.

In addition to Lovato, VMA-nominated indie rock outfit Foster the People will also hit the stage at the show, hosted by "Glee" star Jane Lynch. OneRepublic will also perform with B.o.B.

"If you are expecting anything less than 'wow,' you've got the wrong awards show," Nancy Lublin, CEO and Chief Old Person of DoSomething.org, said in a statement. "We are so psyched to have Demi's first public performance, a hot breakout band like Foster the People, and expect OneRepublic with B.o.B to be very loud!"

The big nominees include Lady Gaga, Justin Bieber, Prince William and Duchess Catherine, David Beckham, Scarlett Johansson, Russell Brand and Will Ferrell. Celebrities are nominated in a number of categories from Do Something Movie Star to Do Something Couple for helping to inspire young people in the world of philanthropy.

The show sets out to honor the "nation's best young world-changers who represent the pivotal 'do-ers' in their field, cause or issue." One lucky "do-er" will have the chance to win $100,000 for their cause. The five nominees this year are Taryn Guerrero Davis for the American Widow Project, David Schwartz for the Real Food Challenge, Sarah Cronk for the Sparkle Effect, Mark Kabban for YALLA (Youth And Leaders Living Actively) and Adam Lowy for Move for Hunger.

"This year's show will feature some of the hottest musicians performing the summer's biggest hits in celebration of these amazing young people's accomplishments," VH1 President, Tom Calderone, added.