Easily the most successful of the Project Runway alums, Season 4 winner Christian Siriano’s eponymous line continues to wow, attracting celebrities like Victoria Beckham, Lady Gaga, and Rihanna to commission designs. Vogue pegs his ready-to-wear 2015 collection as “the sweet spot between theatrical and traditional," but he’s also brought high fashion to low cost, partnering with Payless for accessible designer shoes to the delight of fashion-forward Pinterest users. In 2015, he joined for the launch of Project Runway: Junior, a revamp of the competition aimed at giving 13 to 17-year-old designers a chance at fame, with Siriano ensconced as a recurring judge.