The Insider.com

Anyone who has ever seen Kelly Clarkson in concert, in an interview or in every day life knows that she is an unashamed, unabashed, unapologetic cheeseball.

• February 20, 2012Maya Rudolph's Hysterical Beyoncé Impression
• February 17, 2012Sarah Colonna Blows It On Her Own
• February 16, 2012Maya Rudolph Garps on 'SNL'
• February 16, 2012Caption This!
• February 15, 2012Victoria Beckham Gets Handsy
• February 14, 2012Real-Life 'Lady and the Tramp' Love

Kelly Gets Heavy on Florence Cover

And now, thanks to her work with DoSomething.org, we've got video evidence of her dorky ways in the form of bloopers!

While filming a VH1 Save the Music Foundation and DoSomething.org "Battle for the Bands" PSA (watch the finished product here), Kelly got a little fast and loose with her lines.

And since there's no such thing as too much Kelly, last week at her concert stop in Biloxi, Clay Aiken joined her on stage for a performance of Journey's Open Arms.

Vocally it was amazing, but the best part is listening to the fans react to his surprise appearance. Watch!