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We’ve already told you about the all-star lineup of presenters and performers who will be at the 2011 Do Something! Awards this year, a list that includes Adam Lambert, Victoria Justice, and Nick Cannon, to name a few. But just today we learned of a few more A-listers who will be on hand at the show and if we can be quite honest, this list? It’s insane. Check out the full roster of attendees and presenters after the jump! The Do Something! Awards air on Thursday, August 18 at 9 p.m. ET/PT. Among the attendees at this year’s awards, you can expect to see Adam Lambert, Amy Poehler, Bethany Hamilton, David Beckham, David Spade, Jon Cryer, Justin Bieber, Kim Kardashian, Kristen Bell, Lauren Potter, Mario Lopez, Nick Cannon, Olivia Munn, Olivia Wilde, Rose McGowan, Sophia Bush, Taylor Swift, Tony Hawk, Tyra Banks, Victoria Justice, Will Ferrell, and Wilson Phillips.