Vintage Black Dress Ruffle Size 9

Vintage black dress with like a ruffle bottom. Spaghetti straps and a zip side closure with hook on top. Size: 9 I don't know if this is a juniors size or if ladies sizes use to come in a 9 (see measurements) Material: I can't find the material tag Care: Hand wash - Drip dry Condition: Very nice preowned condition - no problems found