I am a 28E and I knew that with the xs-s-m-l-xl system, I would need a xs band, but that the cup size would not fit. I opted for a M because (blindly guessing here) I think i have medium sized boobs and I figured I could alter the band down to fit. Sadly, the wires and cups are still too small, while the band is much too large. I would say that the wires are at least two cup sizes too narrow and the cups do not even contain half my boob (lots o nipplage). This is a "final sale" item, which means that I can exchange, but not return it, so i'll exchange for a large and hope for the best.
Update: they sold out. No exchange :-x This would probably fit about a 34b.
Updated on Feb 25, 2016 Flag this