What would be considered as a Japanese contribution to fashion?

My brother in law works as an Business Development Manager in Tokyo. Everybody looks forward to him coming back home with Japanese Adidas gear, specially sweatsuits, and soccer clothing. The sweatsuit come in materials, colors and styles that do not make it to the US, don"t quite know why. Also the soccer jerseys are phenomenal.  There is also the whole Harajuku clothing scene, where teens imitate the clothing style of their favorite manga characters (Japanese Comics). These Neo Gothic styles are difficult to obtain stateside.

Hope this helps.

There is a lot of eccentric things to see in Japan. jguzman40 already named famous US brand which sells different design and color in Japan. but Nike or Adidas, isn't very exotic.

I'm thinking crazy hair fashion,  or just the guts to wear anything you can think of. unfortunately there is not a lot that is brought back from Japan. Japan is pretty self-sufficient in all areas.

But overall, Japan basically copies more fashion than creates any. Here I'm not talking about designers, but more the people I see around me. See, they are all a big fan of the western-idea. Although they super-idealize it, what they see in the magazine, they think that's what we wear everyday. And you are gonna see Japanese people dressed like rock star thinking that's what we're doing as well.

Punk's culture<backspace*7>fashion is also, very popular. However someone really needs to tell them in what kind of trouble American/European Punks are usually into. Here, it's just fashion.

Here are some