M (9-10 US)

Ordered my usual size and the fit is spot on, roomy through the shoulders without being baggy. The stitching along the seams looks solid too, no loose threads after a couple of washes.

Was worried a size M in this would run small, but it fits true to my 9-10 and the fabric barely wrinkles after a full day of wear. Wore it three times the first week, which says enough.

Actually grabbed this as a gift but tried it on myself first—the size chart is spot-on and the fabric has a nice, sturdy weight that doesn't cling awkwardly. It's quickly become my go-to for casual days out, washes well, and holds its shape after a few cycles.