My Mom is a 44DDD, ordered her the 44F and it is perfect! She started CrossFit with me and we tried a number of sports bras. Was getting worried the jump rope and skipping would cause black eyes, not to mention pain since she had a lumpectomy just a couple months ago. We are ordering more. I may order one 44DD in a couple months after she's been in for a bit. Just happy to found one that actually holds her in!