Britney doing press for KFed?

Britney Spears showed up on Monday night's Late Show with David Letterman. Sporting a blonde bob Britney surprised David bywalking onstage behind him as he was sitting at his desk. "Oh, my god," he exclaimed, standing up to shake her hand and plant a kiss behind her ear. "Hi, how are you? Nice to see you. Oh, you look wonderful." "Thank you so much," she said. "I'm in town, and I'm just such a huge fan. I had to stop by." "That's very nice of you to say," said Letterman. " Then Britney said, "Uh, no, I wasn't talking about you. I was talking about Will Ferrell."

Oh brother where are your 3 kids?! Seems like she would have brought Kevin as a "surprise" so he could get some national airtime....Just a thought.