Vintage lavender pink JC Penny dress 9/10 petite

EUC vintage JC Penny dress. Spaghetti strap slip dress with lace overlay in a purpley pink. Guessing from 1980s based on the shape and the acetate. Very lightweight, and the straps on slip dress appear to have been altered at some point. The overlay fastens with a button at the neck and the overlay and slip are zipped up to mid back. Vintage size 9/10. Small stain on the original ribbon belt (pictured). May come out in cleaning, but unknown.