Vintage green maxi sheath column dress bow front button back size XS S

Unknown brand Tagged a size 6 but would estimate modern size XS to S In good used condition-does have some fraying of the inner fabric seams, discoloration in the internal lining of armpit area Polyester with acetate lining Buttons at the top back, zipper at mid back Approximate measurements: Flat lay pit to pit 15 inches Flat lay waist 13 inches Total length 54 inches