Vintage 80s Positively Ellyn black formal strapless dress bow size 6

Vintage Positively Ellyn 80s prom formal party black dress. Strapless. Sash wraps around front of waist and buttons at the side with 3 buttons to cinch waist. Big bow at the side. Floral Lace detail on the skirt portion. Gently used but in great condition. Size 6. Fully lined, thick material, light padding at chest. Upper back is elastic but it also zips at the back (pictured). Made in the USA. Rubbing in the chest to keep its shape.