Gwyneth Paltrow  sat down for a chat on The Ellen Degeneres Show, in a segment that will air today, to talk about being named People's Most Beautiful Woman  and her near mishap at the Iron Man 3 premiere  in LA earlier this week. Gwyneth explained that she couldn't wear underwear with her dress and getting premiere-ready after filming another interview turned into "a disaster." She mentioned that her team went "scrambling for a razor" after they realized she would have to go commando in the Antonio Berardi  gown. Gwyneth added, "I work a '70s vibe. You know what I mean?" Watch the clip for the full interview and Gwyneth's reaction to her big People honor!