Vintage 1950s sleeveless blouse

A pretty vintage blouse c1950s/60s. Handmade. The material feels like silk polyester (I'm not sure, it's soft, very finely woven with no stretch). Pretty soft ruffle collar with a fixed blue bow. Three rows of blue stitching on each side running down the front of the blouse. Measurements: Pit to pit is 18" Length from shoulder to hem is 18" Armhole length is 6 ½" Please note that there is no stretch and it is a pull on blouse. I'm my opinion it would ideally fit a size 8 Very slight age related wear.