Fashion week is upon us again. A month of new collections, glamorous parties and flashing bulbs; a million images, a travelling circus. As London turns to Milan, then Paris, I’m thinking about the fashion world as seen on screen: real and fictional designers, models and the worlds they inhabit. Fashion is a fascinating subject for directors because it is already a kind of cinema, with its stars and costumes, its sets and lighting, itshellip;read more raquo;