Sarah Ferguson Pascal Le Segretain/amfAR/Getty Images for amfAR Sarah Ferguson really wants to join Bridgerton. “I want to go on Bridgerton. Susanna [Reid], let’s go on Bridgerton,” Ferguson, 64, quipped to the broadcaster during the Wednesday, June 5, episode of Good Morning Britain. “I think Lady Penelope should have a friend who’s got red hair…