Here's the gorgeous Katherine Heigl at a David Letterman interview. She's wearing an eye-catching red dress and matching bright red lipstick. Her complexion is radiant. She has said in the past that she doesn't work out much, but that's unlikely. Here she talks about the little mishaps around her wedding and a bit about the 27 Dresses movie. She doesn't sound like she would want to pay the ticket price to go see this movie. (Oops, not so good for future movie star contracts, but she can get away with it as she is the It Girl in Hollywood right now.)