You can take the Metro to Rue Des Abbesses and you are just a couple of blocks away. Walk down Rue Des Abbesses turn on Rue Houdon and look for the little yellow sign. When you get there you walk down a few steps to enter into this cavern like double room full of dusty little gems.
I love this little place as it is real Parisian thrifting. The racks are bursting with stuff, there are piles in every corner and the shop owner is a slightly surly but loving gentleman who plays chess and smokes cigarettes while you shop.
This one because doesn't every gal need a moo moo covered in zodiac symbols?