Vintage Oscar de la Renta Dress

Gorgeous vintage ODLR, union made super lightweight - feels like a silk chiffon size L (size 10/12?) based on measurements stain trim on the hem left side slit left opening/negative space on shoulder area white marks throughout and inside - looks like deodorant and just needs a cleaning. despite that, in good condition the simplicity and tailoring make this piece so special approx measurements flat pit to pit 19" shoulder 15" waist 17" length 60" back, front hem 54" (angles slight up) slit length 22"