I attached a blog review below, but I'll summarize here. I usually wear a 32 band, but this one is a bit loose; I wear it fastened on the 2nd hook. I would absolutely suggest going down a band size in the whole Showgirl Collection. Also, even though this is a shallow cup, it is a bit too deep for me near the gore which is causing some gaping in that part of the cup. Someone with firmer breasts or who is fuller on top probably wouldn't have this problem?
The bra itself is incredibly comfortable, though I find that the wings do come up high enough to rub uncomfortably after a long day of wear. Even with the slightly off fit, this bra looks good under a shirt.