Stella McCartney slightly-sheer button-up blouse

Absolutely beautiful and very feminine Stella McCartney blouse, button-down, drawstring, 2 pockets, in a slightly sheer fabric. Made in Italy. No size tag but it seems like a small. Arm opening is about 6.5” across at the hem. No tag for the fabric content or how to wash it. It’s not silk. Might be a cotton/linen blend. Beautiful sleeves with lovely gathered stitching. Tiny thread is poking out from bottom back of blouse; I’ll let you either trim it or push it back into the fabric. (See picture) Color is a sort of lavender with a hint of gray. Measurements: 17” across from armpit to armpit 19” across at the widest part near bottom hem 24” from top of shoulder to bottom. 23” from top of back to bottom. Please feel free to ask questions.