Low back silk blouse

Silver/gray silk blouse (with 3% spandex) This top is gorgeous and elegant, with a low cut back, that buttons down and has a ribbon. Armpit to armpit is 17” Length is 24.5” I don’t remember what brand this is because I cut the tags off at one point. I think it was Ann Taylor, size S. Armpit to armpit is 17” Length is 24”