This gorgeous dress is from the 60's by Parisian Designer Beni Salvadori. Pristine condition! The fabric feels like a gabardine wool and silk blend.but The elaborate sequin and bead work is to die for. A-line silhouette and mini length. The last photo shows the designer himself and model with this exact dress. Beautiful construction and quality. Best fit would be an XS/S however, please see the measurements below for a proper fit.

Measurements
Armpit-armpit doubled 32"
Waist 29"
Hip 37"
Length 34" from nape of neck

This item is sold from an excellent, highly rated vintage boutique in Westfield, Massachusetts.