Vintage Tailored Shift Dress

Vintage tailored shift dress with puff sleeves. Black with shades of pink and ivory abstract floral pattern. Snap closure on back neck. Hits right below knee. Not sure what decade it's from, best guess is late 70's or 80's. No tags on the inside, so no idea about size or fabric, likely polyester. Very lightweight. Excellent vintage condition, no stains or rips. I put medium as the size because it's tight on me in the hips and I wear a large in 'modern sizes'. PTP: 19", Hips: 20", Length: 44"