Lady Antebellum Excited About "Letterman" Appearance

Lady Antebellum is getting ready for their debut appearance on CBS' "The Late Show with David Letterman." The group's Hillary Scott notes it's really a big deal to be invited to appear on the show. Lady A's Dave Haywood adds that "The Late Show with David Letterman" is the only late night talk show the trio has yet to visit. The group is promoting their second album, "Need You Now," with the "Letterman" appearance. Lady Antebellum will be the musical guest on Letterman's CBS show tonight.