Review on 👍 Improved Posture Corrector for Men and Women - Adjustable Upper Back Brace for Clavicle Support, Neck & Shoulder Pain Relief - Upright Straightener Comfortably (Pink, M 31-36 Inch) by Julio Roberts

I am 28" under bust and the small size fits me perfectly. This brace comes with an extra strap in case you need to add a few inches more room, but I don't think you'll need it if you order the right size. There are adjustable comfort pads that can be slid under the armpits to avoid discomfort. You must remember that this brace is designed to remind you to sit up straight; It is not designed to carry your weight for you. It trains correct sitting and standing. If that seems too impractical for you, that's because you're trying dead weight. You definitely need to be mindful of your posture for this to work. I have large breasts and I find this helps relieve upper back pain. I'm doing strength training for my upper body and that was enough, but after an accident a few months ago I can't lift anymore. So it definitely helps at the same time.