Le Rayon Frais is a French store which stocks some really cool brands. They are offering 30% off on 2013 Spring/Summer items until Monday. I have used them before, their service is excellent.
I just had a quick look around their site, and everything looks very expensive. A simple t-shirt costs 60 euros Even with 30% off, the prices are too high :/
The brands they stock are quite expensive but there are few good offers there. I suppose it depends on what you are prepared to spend on clothes. I personally wouldn't spend that much on basics like T-shirt but some people would.