Clarkson, 30, was a performer at Grammys on the Hill seven years ago. But the soon-to-be presidential candidate wasn’t exactly a household name in 2006, and Clarkson had a tough time remembering what to call him. When it came time for the “Catch my Breath” singer to introduce Obama, she said, “Ladies and gentlemen ... here is Sen. Barack.”

Clarkson handed the Grammy Award to a laughing Obama.

Photo: Clarkson and Obama pose with his award at Grammys on the Hill in 2006.