British singer Lily Allen recently took some fan questions on Reddit, revealing that she was offered a chance to appear on "Game of Thrones" as Theon Greyjoy's sister, but quickly turned it down. In the scene (from season 2), Theon arrives at Iron Islands and is greeted by an attractive woman. She offers him a ride on her horse, which leads to Theon fondling her. It's later revealed that the women is actually his sister, Yara. The reason why Allen turned it down is not because the scene has a brother fondling his sister, but because Theon is played by her real-life brother, Alfie Allen. And that's too creepy for her. "I've been asked to do a 'Game of Thrones' cameo," she said. "They asked me if I'd be interested in playing Theon's sister, and I felt uncomfortable because I would have had to go on a horse and...