Leyendecker Beaded Silk blouse, M

Leyendecker Beaded Silk blouse. No size tag. Approx. measurements: pit to pit 19”, length 23 1/2”. My best guess is a size medium but probably fits multiple sizes due to flowy, oversized style. Gently used. **care tags have been cut out. I’m pretty sure this is silk. **very faint dark spot lower front, see photo. I only noticed under bright photo lights. Gorgeous top!!