I don't know if this has been mention yet but the magazine Lucky (US) does a section called "shopping trip" every other month in which they list the best shops to shop at in a specific city. They have done a bunch in North America and also London, Milian, and PARIS. They talk about small boutiques, department stores, flea markets, designer boutiques, etc. I think its great, but too bad I'm only a teenager and can't go to Paris or London. Paris in Lucky's June 05 issue but it's not featured online yet on
http://www.luckymag.com/cities/, so check back.
But, according to these past replies you're going to have to wait.