32DDD here, 5'3", 140lbs, 29" waist.

Let me start by saying that I'm an underwire-only kind of girl. I hate wearing anything that gives me uniboob, or smashes the girls to make me look flat-chested, or doesn't support correctly. No matter what I've ever tried, nothing ever compares to the underwire bra when I have a tiny rib cage and big knockers. Unlike my mother, I don't try to hide my voluptious figure, but rather accentuate it without looking like a hooker. So imagine how hard it is for me to wear a sports bra, even though I know it's needed for the task at hand, I still can't get over how unflattering the dang things are! I have tried MANY over the years and the ones that fit my rib cage (31" around), are always too small for my rack so I have to jam and scrunch the poor tatas in there and just deal with feeling like I'm being crushed to death. It's not an option to size up for my cup size because the band would be so loose that the bra won't even stay on, totally defeating the purpose. There for it was very hard to decide which size in this brand to order, sight unseen.

I normally wouldn't wear anything with extra padding because of how large they already are, but I decided to try it out in the hopes that it would make wearing a sports bra less frumpy. I'm happy to report- Problem Solved! Indeed the thin layer of removable foam along the front of each cup helps to add the shaping that I'm missing from an underwire. Back to the sizing issue though:  after reading tons of conflicting reviews about which size to order depending on your band and cup size, even though I tried to only read reviews from gals with my approximate size/shape, it took a shot in the dark and went for the medium. Not very happy with how it fits though, now that I have had a chance to try them on. They fit fine in the cups, good(albeit snug) support, but the band is a bit big and I fear that if I really get going on my exercise machine, that it'll chafe my rib cage or I'll have boob slippage out the bottom! It's one thing that deal with that annoyance at home while working out, but I certainly wouldn't want to have to deal with that at a gym or out for a run on the street!  Not sure if exchanging for a size down would work for me because I think the cups would be (again) uncomfortably smashy. Argh! Hopefully you fit into their sizing chart in the pics, and you shouldn't have any problems, but if you're like me and have a grossly "out-of-the-norm" size, you may not be able to wear these. I would say all-in-all- the sizing is fairly accurate though.