Vintage beige tan cotton short sleeve pleated blouse with buttoned waist detail

Size 36 EU I got this in a vintage store in Germany It has a covered button placket in front and buttons at the waist to cinch in the pleats Sleeves are quite baggy 100% cotton very lightweight Approximate measurements: Waist 28” with belt piece buttoned on both buttons Front collar to hem 23.5” Shoulder to shoulder 17”