I am usually an XS in Eileen Fisher, but could not resist this bc it’s gorgeous - high quality construction, heavy silk, with a slightly matte/sueded sheen (visible in the cuff photo). Color true in the first two full blouse shots.) Well- constructed/weighty enough to wear open like a cardigan, or buttoned as a traditional button-down blouse. Alas, a bit too large for me. Worn 2x! Armpit to armpit: 20 in Shoulder to end of sleeve: 26 in Top of collar down the back: 30-31 in