Something simple such as this(80's fashion):

Now is something more like this:(90's-2000).




What we can conclude from these differences and changes is that Japanese fashion has changed what it tells people(its message) and also what its effect on people is. It started out as a message of fertility(wanting to get married), youth, and the hope of a successful future and has evolved into a medium of expression and creativity. Instead of simply being functional it is now a way to identify with others and be who you want to be. With the ever growing street cultures and sub-cultures, japans fashion industry has a unique group for just about anyone(ganguro, goth, Lolita, nerds).
The evolution of Japanese fashion is not only the growth of an industry, its also the growth of a separate medium that allows anyone to become who they want to become.