Finally, there's a book for those of us who worship at the (fashion) altar of Don, Joanie, and Peggy. Janie Bryant, the costume designer who makes all of them look so positively dashing, has just published "The Fashion File: Advice, Tips, and Inspiration from the Costume Designer of Mad Men," (foreword by January Jones, naturally). Recently, I had the pleasure of talking to Bryant about her book. She was in Los Angeles, where she moved from New York eleven years ago, and she spoke with unmitigated passion for "Mad Men" and her role in it. Bryant is charming. She would admit to having no favorite among the characters, confessed that she began designing costumes using her Barbie dolls--and you know that scene in season four, when the women all get on the elevator together? It's one of her favorites, too. An edited version of our conversation appears below.