Late Show Michelle Obama

March 20, 2012 - 2:38 PM
In this photo provided by CBS, first lady Michelle Obama joins host David Letterman on the set of the “Late Show with David Letterman,” Monday, March 19, 2012 in New York. It was her first visit to the show. (AP Photo/CBS, John Paul Filo) **MANDATORY CREDIT; NO SALES; NO ARCHIVE; FOR NORTH AMERICAN USE ONLY