‘Bionic’ Woman Christina Aguilera Does ‘David Letterman’

David Letterman made a punchline out of Christina Aguilera last night without even realizing it. During his introduction of the Bionic diva, he noted that Xtina has sold 30 million records throughout her career. “That’s crazy,” he said. Then he held up a copy of Bionic and innocently noted, “Well, here’s one she hasn’t sold.” The album just went on sale on Tuesday, and currently it’s getting whooped on iTunes by both Glee‘s Journey To Regionals EP and the Twilight Saga: Eclipse soundtrack. Here’s hoping Dave’s words don’t end up being prophetic. Watch Christina’s interview and performance on the Late Show after the jump.

Dave and Christina’s four-minute conversation pretty much covers all the basics: her kid and how he inspired her to experiment more with her sound. She also discusses her work with the World Food Program charity.

And here she is performing Bionic ballad “You Lost Me,” a classic-sounding Christina tune that probably has far greater chances of becoming a hit than “Not Myself Tonight” did.