If this is an attempt to broaden brand appeal/name recognition, it's not going to work well, because the kids buying H&M aren't suddenly going to switch over and buy $900 pairs of slacks. Do you really think that's who these limited designer collaborations are geared toward? Kids who don't know anything about fashion and cop everything at H&M? No way. These are for people with an interest in fashion. People who H&M wants to get into their stores, not people who already shop there all the time. And obviously it opens the door to a company that lots of people couldn't previously access. Will some people cross over and buy real Lanvin? Sure. Will most? Probably not. But Lanvin is still getting paid and H&M is raising the value of their brand by association. And do people really think this will have any real impact on Lanvin's perceived value by doing one limited edition collab? Nope, it's just going to increase brand visibility and make them more popular. Two years from now no one will be asking if the H&M collab hurt the brand, but young people who copped it and are now making more money might be picking up the new Lanvin gear at Barneys. Another way of looking at it: has the existence of +J kept anyone from making Jil purchases?