Joan & Melissa Rivers Prod at 'Project Runway'

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Joan Rivers and Melissa Rivers invade the judges table on the next Project Runway, and we have a racy clip from Thursday's episode!
The stars of Fashion Police and Joan and Melissa: Joan Knows Best, the feisty mother-daughter pair are among the many celebrity guests appearing this season, including Emmy Rossum, Kristin Davis, Susan Sarandon, Bette Midler, Miranda Lambert, John Legend and Jordana Brewster.
Project Runway airs Thursdays at 9/8c on Lifetime.