I loved this bustier top so much! But I had a baby and well, let’s just say I am no longer a small top because of breast feeding! Sad to let it go, as it’s only been worn once for a few hours out to dinner. I would say this size small would fit a breast size of 34A or 32B It has a crop to it also but could be worn with high waisted pants for less of a midriff exposure.