Are you obsessed with the fashions on Mad Men? Well, come Sunday night you can ask costume designer Janie Bryant all about the looks you’re seeing on the screen! We’re hosting a live Twitter chat with Bryant on Sunday, April 27 during the show, and we want you to join the conversation. Follow along as we discuss the costumes we’re seeing on our TVs to find out why Bryant chose the looks for certain scenes, her favorite pieces from the episode, and much, much more.

To participate, Tweet along with the hashtag #AskJanie starting at 10EST/7PST, and be sure to follow @InStyle and @JanieBryant, so you don’t miss a thing. See you then!