Vintage Gunne Sax cocktail dress - size 9/10

Pretty black velveteen cocktail dress by Jessica McClintock. Beautiful appliqués at the neckline adorned with beads and sequins. Spaghetti straps and zipper up the back. 5 inch vent in the back. Very good vintage condition. However there is slight unraveling/loose threads at the top of the vent. Please see last photo. Approximate measurements with dress laid flat: 16”, top of shoulder strap to hemline 35”. Please refer to these measurements for sizing. May be a junior size dress.