As the hit musical Dirty Dancing prepares to go on tour, our reporter joins young hopefuls at open auditions, and asks how a low-budget film became ‘a cultural event that lasted decades’ You could probably argue that Flashdance is the better film, but it is Dirty Dancing that captured our collective heart. They call it “Star Wars for girls”. It’s not much on paper: a family goes on holiday, and its late-teenage daughters fall in love, one with a good’un – Patrick Swayze on career-defining form – and one with a bad sort. Steamy dancing occurs, that’s the main thing. When the stage version opened in