FIT: If you seem to be between sizes, size down on this bra. It is a luxurious and stretchable fabric that has a more relaxed fit than our compression bras. I wear am a 34 B and I wear Mediums in all bras except this bra. I wear a SMALL in this Dynamic Bra. You will love this bra for those relaxed workout days where you just need a little more support and breathable fabric than a regular bra.