Japan and it's not even close.
They have a lot of quality high fashion brands for every subculture. Plus they produce the clothes in Japan (for hight fashion brands) and often incorporate their rich traditions of tailoring.
And they really dont mess about quality, and you feel that you get your money's worth. And it's relatively inexpensieve when you compare to the prices here. With western brands you are paying for the name recognition more often than not.
Like I wasnt a fan of denim like that but ever since I bought products from Momotaro or Blue Blue Japan it really opened my eyes on the quality issues of jeans made in the US.