OF HUMAN BONDAGE: Francesca Eastwood just turned 20 and is taking her first steps in the world of fashion. To wit: She attended the Salvatore Ferragamo show on Sunday. “You dress in the way that you want to be perceived. If you want to be taken seriously as an actress you’d better not wear bondage. If you are a pop star, it’s different,” said Eastwood, adding that she prefers “very simple, sophisticated, clean lines” for official events, versus “flannels and ripped jeans” when dressing down. Eastwood just wrapped filming “Jersey Boys,” directed by her father Clint Eastwood.