I am pregnant, 33 weeks, wearing 85-90 D. So i looked at the size table and read reviews, and thought i must be L. Honestly, i think medium should be fine... as its stretchy. I like the material and it looks solid, but don't believe it runs small.
Upd. Got it in Medium. Fits perfect. Cups are a little bigger than i need now, but when the milk comes, it should be perfect.
Band is just perfect size. Its a little tight, but will stretch a little (and i hope to loose some in that area after giving birth). It took me some time to figure out how nursing bra works  (i mean how to unbuckle one breast ).