VTG 80's Gianna Geometric Satin Blouse Button Down

Classy vintage 1980's blouse from Gianna in a lively black and white geometric pattern. ~7 buttons up the front under a hidden placket ~Button cuffs ~Light gathers at the shoulder seams ~Light shoulder pads for nice shape ~Unlined ~Straight-hemmed and straight-sewn (no darts or princess seams) ~100% polyester, machine washable The size tag is faded so I am only guessing the size. It fits closest to a medium. See measurements and the rest of the description in comments.