The product description that this fits "DD-H" cups is not accurate. I imagine this is because most women are wearing the wrong bra size since most in-person stores only go up to a DD cup; there are probably a lot of women out there who think they are some manner of DD cup and are actually not. But as someone who is a 32FF cup (UK sizing, which is probably around a 32G in US sizing), the "medium" (or smallest size available in this product) was too large for me. Either the sizing guidelines were inaccurate, or I was sent a larger size. The whole camisole was loose, especially around my ribcage (30" at rest, 31-32" inhaling). While I (barely) filled out the cups, the elastic in the cups didn't provide any noticeable support. If you have a very small ribcage, I'm not sure this product would work for you, and I think the "DD+ cup" in the description is misleading. This will not work for all DD+ breasts.