I feel in love with the store Montaigne Market on my last trip to Paris. Located on the sober and serious Avenue Montaigne the Montaigne Market has a great selection of young/innovative and traditional designers with a very hip inventory and style philosophy created by Liliane Jossua. The store is very gallery like with the fashion displayed in a manner that is easy to digest and view. I like the fact that they have a funky vibe on a street that is a bastion of Haute Couture.
With a selection for woman, men and fine/custom jewelry their concept and curation makes them different than your typical designer store. Some of the designers they carry are Simone Rocha, Sacai, Balmain, Mugler, Christopher Kane, Alaia, Aquazzura and Tamera Mellon. Further, American designers Alexander Wang, Marc Jacobs and Rag & Bone are represented to name a few.
Even though pricey it is a great venue to go and scout out the new trends. Listen, looking is free and for me seeing new items is insprational. They carry limited editions and many runway pieces that might not be found elsewhere. If in Paris check out Montaigne Market if you like en trend and innovative fashions.