There will be the Années Folles exhibit from october to february (with dresses by Chanel, Lanvin, Vionnet, Babani, Natalia Gontcharova, Sonia Delaunay, and Poiret _ insider informations thanks to
lisotchka), but also
Histoires de Mode by Christian Lacroix, that is a mix of ancient gowns chosen in the collection by the designer, and gowns of his own. Some pictures in that PDF :
http://www.lesartsdecoratifs.fr/fr/pdf/cp-lacroix.pdfAnd no, I do not to go to that exhibit costumed :))
And also, for
lisotchka, who will probably be the only one in Paris at that time to see it : there is an auction at Drouot the 19th october, with old costumes since the XVIIIth century. You can see them the 18th, all day, I think, and the 19th, few hours before the auction which is at 14h. Informations are available in Brocante Magazine with a pretty 1870s blue dress picture in it. I didn't yet find any informations at the drouot site. I don't know if there will be a catalogue.