BBC News By Steven Brocklehurst image copyrightAlamy image captionDee Hepburn played Dorothy, the school football team's star striker and object of Gregory's affection Hardly a day goes by without somebody asking Clare Grogan to quote a line from Gregory's Girl, the teenage romantic comedy set in a Scottish new town which became an unlikely hit when it was released 40 years ago this week. "Sometimes they ask me if I can lie down in a bank of grass and dance," says Grogan, who was just 18 when she filmed that scene in the film four decades ago. Grogan, whose career also included huge success as a pop star in the band Altered Images, told BBC Scotland she does not mind the constant reminders of a film she made when she was a teenager.