Vintage Long Black Formal Dress - Size 8

Vintage long black dress - one shoulder with sequined flower on left shoulder. Purchased in a consignment store in 80's and only worn a few times, stored in trunk for over 30 years. No tag with brand found. Tag reads size 36, US size 8. Material is polyester. Measurements: Bust: 30 inches Straps: 13 inches Length: 42 inches Flare: 80 inches Total Length: 57.5 inches