Bravo announced that Project Runway season 20 will feature an all-star cast for the first time in the show’s history. Project Runway has been airing since 2004, and to commemorate this milestone season, it will feature 14 fan-favorite designers who all get a shot at redemption. As the designers have not previously won the competition, it is a second chance for them to come back and prove themselves against other designers that compete at a high caliber.
https://screenrant.com/project-runway-season-20-all-stars-trailer/