I don't know about you, but I usually visit many shops and try and match them with my outfits. Everyone says I have this 'kpopean' (if that's even a word lol) feel to my clothing style. It depends as well if your a boy or a girl. (most of the clothes i see, are mostly for girls.)But most importantly you'll have to visit many shops and buy clothes you will never even think of wearing. For exmaple, im a girl, but i mix between boys wear and girls wear :). And if you have this certain style, but can't find it in shops. You can always draw the design on a paper, buy the clothes that consist from the style and take them to a seamstress (dressmaker). I'm sure they'll know what to do.

HWAITIING!! >.<

I see you have problems with your wardrobe as well xD haha.... I am planning on changing it soon as well. And coming back to school ....-_-

You must have found this site already but here:
- http://hallyuuk.com/how-to-dress-k-pop-for-cheap-featuring-exo-for-boys-girls/
hope it helps XD

Dont know any, sorry :/
But if you are a crafty person you can try to remake their clothes :D