Tim Gunn and Heidi Klum in Conversations with Klum Most people know Tim Gunn as the mentor to the contestants on 'Project Runway.' He guides the designers through each challenge, offering compliments and constructive criticism. Over the years I've gotten to know Tim quite well, chatting with him during breaks on set, and after the challenges he fills us in on the workroom gossip. Tim is a proper, neat, kind man, and he offers some advice on some trends he thinks should go away. Should I listen to him?