To mark its 10th anniversary, ABC’s Who Wants to Be a Millionaire will return to prime time for an 11-night run starting Aug. 9, USA Today reports. Regis Philbin will return as host, along with celebrity guests—including Snoop Dogg, Lauren Conrad, Vanessa Williams and Katy Perry—who will answer one question at the end of the show for a chance to win $50,000 for charity. (More Who Wants to Be a Millionaire stories.)