I bought BNWT (brand new with tags) from ebay. I got a 12​/​44. I’m usually a 10 but being new to the brand I felt comfortable sizing up. It is a little roomy but I think a size smaller might be a bit snug on my arms. Showing pics of the shirt buttoned up all the way as well as unbuttoned but I prefer it buttoned up all the way.＜abbr＞Sezane​,​12​,​$125​,​5'1-5'2 5'1-5'2​,​Button-Down Shirt​,​French Brands​,​Size 12​,​Tops All Reviews​,​Sezane​,​Top＜​/​abbr＞