Timothy MacKenzie "Tim" Gunn (born July 29, 1953) is an American fashion consultant, television personality, actor, and voice actor. He served on the faculty of Parsons The New School for 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 as its chief creative officer. He is well known as on-air mentor to designers on the reality television program Project Runway.