Beautiful black strapless dress w off white lace L

Black strapless maxi dress with off white lace overlay. There as an inner black lining to the thigh area for modesty. From mid thigh/knee area down to hem is sheer black. Elastic at top and waist. Small slits on both sides of bottom skirt to make it easier to walk in. I'm 5'10" and am able to wear medium heels and it still touches the ground. Feel like it fits like a size 10/12 B: 15” but stretches to about 20” L 52”