To celebrate the milestone 20th season, Top Chef returns for an epic international showdown with World All-Stars in London. Sixteen of the greatest competitors, including winners and finalists, representing 11 different Top Chef iterations around the globe face off in the fiercest showdown the culinary series has seen. For their first Quickfire Challenge, the chefs pair up and combine ingredients to cook a dish featuring U.K. seafood. Then, in the first Elimination Challenge, the chefs must create vegetable-forward dishes where protein serves as the accompaniment. Padma Lakshmi, Tom Colicchio and Gail Simmons return as judges, and joining them as the first guest judge of the season is legendary Michelin-star chef Angela Hartnett. Anonymous