J.Crew linen V-neck blouse - fits more like a SMALL

J.Crew linen V-neck blouse. Was laundered and fits like a SMALL. Pit to pit is 21", Shoulder to. hem is 24" Sleeves are 19". I wear a medium/large and the yolk under the bra line was a little high on me. Beautiful blouse, No rips, stains. Smoke free home.