Christina Hendricks, Mad Men
Credit: Michael Yarish/AMC; Courtesy Photo

A new season of Mad Men premiered last night, and we caught up with the show's costume designer Janie Bryant to get the inside scoop on the fabulous retro fashions seen on the ladies of Sterling Cooper Draper Pryce. One of our favorite looks: the flirty pink dress Joan Harris (Christina Hendricks) wore on her first day back to the office. "That look is all about her feeling beautiful, showing the office that everything is going great, and having that façade of 'life is fantastic,'" Bryant said of the original design. Click through the gallery for Bryant's take on more of last night's looks, and catch the next episode of Mad Men Sunday, April 1st at 9/8c on AMC.