Answer
Jill Taylor is a character in the movie "21". She is portrayed by Kate Bosworth. She is the girlfriend of Ben Campbell (Jim Sturgess), who is a math major at MIT. Ben is recruited by Professor Micky Rosa (Kevin Spacey) to join a team of students who cheat on blackjack at casinos. Jill is initially unaware of Ben's activities, but she eventually finds out and is upset.