Fashion has been always meant perfection.
Since women knew how to seduce men, fashion existed. I can bet it.

Some other people would say that fashion equals materialism, a big lie.

I'm not agree with any of them; fashion isn't a big part of my life, but I try my best to fit it in it.
Take a look, fashion is good at someone's view & delight anyone who loves good stuff.

So my conclusion is we must love fashion healthily, but not get obsessive with it, what I mean by that is love yourself as YOU ARE, love your body as it is, love your personality; is unique.
I think fashion should show what someone's feels inside & not something material