Top Chef Duels begins tonight at 10:00 p.m. on Bravo. The series is hosted by celebrity chef Curtis Stone and judged by Gail Simmons along with Wolfgang Puck and Hugh Acheson. The show will also feature special celebrity guests including Shailene Woodley, Rob Zombie, P!nk and Andy Samberg. So, how does the show work? Bravo Media gives the basic rules: In each episode, two chefs will face-off in three rounds of head-to-head battles testing their skill, creativity and speed ... The third and final challenge of each episode will decide who moves on to compete in the ultimate high-stakes season finale where 10 chefs will be confronted with split second decisions as they lay it all on the line in the greatest challenge of their careers. In the end, only one chef will earn bragging rights and win the $100,000 grand prize and a culinary adventure that will be featured in Food and Wine Magazine. The show will also feature a digital video series called "The Knockout," similar to "Last Chance Kitchen," where chefs have the opportunity to battle each other, hoping to fight their way back to being on the show. The ultimate winner will re-enter the Top Chef Duels competition for the finale. Click through this Top Chef Duels gallery to see each contestant and to find out who will be battling who in the kitchen.