White Linen Oversize Buttondown Shirt / Duster

This is fairly heavyweight linen, designed to be worn unbuttoned as a topper or lightweight jacket. Purchased from an Etsy dealer. Size L but I find it's a bit small around the shoulders, so consider it a M/L, similar to a size 8. Approximate measurements laid flat: 20" shoulder seam to shoulder seam, 24" from pit to pit at the lowest point.