Timothy MacKenzie Gunn is an American author, actor, and television personality. He served on the faculty of Parsons School of Design from 1982 to 2007 and was chair of fashion design at the school from August 2000 to March 2007, after which he joined Liz Claiborne (now Kate Spade & Company) as its chief creative officer. Over 16 seasons, Gunn has become well known as the on-air mentor to designers on the reality television program Project Runway. Gunn's popularity on Project Runway led to two spin-off shows; Bravo's Tim Gunn's Guide to Style and Lifetime's Under the Gunn, as well as five books. In addition to being an executive producer, Gunn has served as mentor for the teen designers on Project Runway: Junior. He also provides the voice of Baileywick, the castle steward in the Disney Junior television show Sofia the First and narrated the sitcom Mixology.