Recently, Joan Rivers sat down with Ron Bennington at the SiriusXM studios in New York City in front of a live studio audience to tape an episode of Unmasked. Rivers talked with Bennington about her new book, her recent fight with Kristen Stewart and how emotional it was for her to return to the Carson Show after 27 years. She also addressed comments that comedian Jerry Lewis recently made about an age old fight between the two comedians.