What was she thinking??
Appearing on David Letterman? Surely she had to know that he was completely clueless about her, Vogue, fashion itself and that it couldn't have been any more uncomfortable than it was. The only possible rational behind the decision was that they were trying to make that late night adult audience just a little bit curious enough to go and see it, perhaps even pick up a copy of this year's issue.
Surely a wiser decision would have been to have her show up elsewhere (perhaps it will happen) like the Today Show or another of the morning shows where the female hosts would know enough about her, fashion, the magazine and the movie itself to ask good questions, show genuine interest and thus generate the right kind of buzz.
I felt bad for her that she was subjected that spectacle. She didn't deserve it.