In Sister Act, Tony winner Victoria Clark takes her role as convent whip-cracker Mother Superior very seriously, but backstage at the Broadway Theatre the actress is anything but stern. Clark recently invited Broadway.com to check out her dressing room digs, where she showed off her enormous costume, which (unofficially) weighs 48 pounds, a sweet memento from composer Alan Menken, and “Mother Superior’s Suggestion Box,” complete with helpful hints. Icing on the backstage cake? A peek at Clark’s personal thank you from a very special guest who once used her dressing room. Check it out!