Vintage St Michael bow cap sleeve blouse

Vintage St Michael bow cap sleeve blouse Size 12 but see measurements Marks and Spencer’s brand Made in Canada Pit to pit - approx 18” not doubled Length - approx 20” Very see-through sheer blouse Polyester GUC - one snag on front making the stripes on front smaller, as seen in photo. Faint yellow stains under each armpit, as seen in photos.