It's nice to see, the people are friendly but I didn't get the "wow, yay what an awesome place"…read morevibe.
The shop has fantastic items; old suitcases, vintage YSL, Dior, and Louis Vuitton pieces, an actual minx fur coat (it was diviiiiiine), and typical French antiques (think brocante, chique silverware, oak cabinets with embellishments). It's definitely a mix of actual ready to wear / ready to use and museum pieces. All items veeeeery expensive though, more expensive than necessary in my opinion.
Outside there's a lovely terrace where you can sit and enjoy your champagne, mais naturellement! You can choose different tastings - all glasses different in price range (€5-€12 per glass).
All in all, OK as we were in the neighbourhood and drinking some champagne, ah well why not. A tad overpriced in my opinion.