If youre on American Horror Story, you will probably have to work hard with prosthetics and make up, even if youre one of the stars. Sarah Paulsen has certainly had to work hard as the two headed ladies Bette and Dot. She revealed in an interview with David Letterman, it takes a combination of visual effects, a puppet head and a corset with a special green screen rod to achieve the appearance of two heads. She also revealed that it makes filming very difficult because she cant look her other head in the eyes when speaking, while it can take up to 15 hours to film just one scene with both heads talking. Thats certainly dedication to your trade.