hi meg, the sleeves are 3/4 and can also be folded up which looks great imo, also i would put a 1 near a smallish medium in this because of the narrowing at the bottom. i wear a us 6 and this size fits me well. I hope that helps but please keep in mind that we are all built differently and where i have square shoulders and straight hips others have an hourglass shape that it would hang different on, but i believe, also work for. i think this coat works well for a variety of shapes, marant seems to get that aspect down.
sorry i made an error, same measurements but tag reads size 1 not 2