As some of the most enduring items in our wardrobes, the little black dress and its sibling, the long black dress, need no justification for its place on the runway. They are, and will always be, those heroes that saves us in all sorts of sartorial dilemmas. At the shows, they came in various silhouettes and styles: cropped, mini and bell-shaped at Valentino, where the entire collection was a manifesto to the LBDs, and sheer and ethereal at Mugler. Need something to tackle all your summer events? Choose one of these.