If anyone knew how to do Halloween it was our favourite fashion chameleons - Crawford embodied Marylin, Cher channelled Cleopatra and for Moss, well, anything goes. Our eternal icons are keeping the fear alive by reminding us exactly what it means to get your freak on this Halloween, and here we find inspiration via some of the most glamorous (and gruesome) costumes from decades past. Whether a witch, a cowgirl or a blood-sucking supermodel, the moral of this horror story is if you’ve got it, haunt it.