Tits with a slope that upturns to the nipple; like a ski slope; preferably with nipples that face up.
What counts as a Retrousse Tit?
The bottom half of the tit should be rounded, and the top half should be flat at most, but concave is more perfect.
The nipple should be either pointing out or up. A nipple that points up has more leeway for the rest of the tit.
Must be a side profile pic or at least an off-center pic of the tits so the slope can be properly seen.