"L" is for Lisa Loeb --
Lisa Loeb is a lovely and talented singer/songwriter and, apparently, a very good sport as evidenced by the photos below. While making an appearance on Isaac Mizrahi's show (and captured on her reality show, "#1 Single"), Isaac--if I remember this correctly--told her it was customary on the show for the guests to show off their underwear. Lisa went back to her dressing room, and a few minutes later, before filming started--
She seemed a little shy about it at first, but she must not have minded too much, because, in a subsequent appearance on the show--
A talented singer, songwriter, good sport, and owner of a cute, spankable tush...