I’m a UK6-8 and got the 36 - true to size for me with room for thicker jumpers. I could have sized down but I have long arms so decided not to. It’s structured and heavier (the right amount) than the usual trench coat​,​ amazing quality.＜abbr＞Sezane​,​4​,​$305​,​5'5-5'6 5'5-5'6​,​Coats​/​Jackets​,​French Brands​,​Size 4​,​Trench All Reviews​,​Sezane＜​/​abbr＞