Like so many other places this doesn't sound my kind of.  Uniqlo immediately springs to mind.  I like obscure, slightly dusty shops where it's just me and some biddable lady slipping into a vintage dress on the opposite side of the curtain.  You can always ask their advice about what you're contemplating buying and it gives you a chance to flirt (like with the scrummy 40-something in Boots' last evening, whilst my daughter was having her eye-test). 
Anyway, they seem to be spreading like a rash, so someone other than Uncle Jimmy must have sampled them.  Online comments suggest they are highly priced and a touch on the gimmicky side.  Yes?