@^ Most bras can fit sizes right around them. Like if you are a 40 DD or DDD you could fit a 38F. It won't be perfect but it works really well. Alternatly, for smaller sizes, the general rule is you can go down a band size and up a cup or up a band size and down a cup. So it will fit a DD if the person wearing it is just a bit bigger of a band size. Its too small for me as well :( If only it were an FF I could make it work. I'll keep an eye on it though, I might try anyways!