Project Runway Season 15 is the fifteenth season of the television show Project Runway, appearing on Lifetime. The season began on September 15, 2016, and attracted 1.72 million total viewers. There are 16 designers competing to become "the next great American designer." Supermodel Heidi Klum, Marie Claire creative director Nina Garcia, and fashion designer Zac Posen are all returning as judges this season. Tim Gunn maintains his role as the workroom mentor. In May 2016, Lifetime renewed Project Runway for three more seasons (16, 17 and 18) in a deal with The Weinstein Company.