Finally, though, there is only one litmus test which will make this, or any collection, sell: Is the girl on the runway someone other girls want to be? Slimane’s good at pushing classic youth-cultural buttons, but in his casting the one thing he’s not in touch with is the fact that today’s young girls want to look at other girls who represent the way they look. How long will it take for designers to realize how badly they’re cutting their own chances by not reflecting that?