Ladies Ivory Lace Dress  Guessing approx. size small medium

Ladies Ivory Lace Dress  approx. size small medium Please check measurements  bellow 15” Across shoulders and 37” Long –18" Under arm to Under Arm. Please check measurement pictures I took these measurements to help visualize the dress and you can see how it hangs on someone- This dresses is a ivory color not sure its not white its off white It has a long back zipper closure - This dress has no tags I am thinking its home made- It is lace with a lining underneath so its not see through -