For the taller ladies!
I originally ordered a size S and ended up exchanging for an XS. Even so the slit comes down very low - not practical if you want to wear a bra underneath - would definitely look better for the taller torso and bustier ladies. Nonetheless, I kept it and had my seamstress use the spare button and add it in, raising the collar so it isn't as revealing.
Love the color, quality and tweed material. Very upscale piece!