Fred David Vintage silk blouse sz12 (more like a 6/8 or M)

100% silk blouse a vintage Fred David it says size 12 it fits more like medium/large or 6/8-ish. Amazing condition the collar does have a very very minor spot. I’m not exactly sure what it is or if it can come out but it’s barely noticeable. 20.5” arm pit to armpit. Armpit to bottom is 15” shoulder to bottom is 23”.