Ladies Vintage 80s Summer Hamells Floral Cotton Dress 16-18

Ladies Vintage 80s Summer Hamells Floral Cotton Dress 16-18. Sleeveless, v-neck, buttoned front, v-shape to waist at front and back, just below knee length. No size label but it looks like a 16-18 - check measurements in the last photo. No materials label either - it feels like cotton. Good vintage condition.