I absolutely love these! I'm a 36D and I wear a Medium in this bra (took me a while to get the right size, so definitely read the sizing reviews here before you buy). It's rare that I find a bra that feels like it gives me enough support without underwire, but this is one of those bras! I love that it can be converted for racerbacks and comes in tons of colors, not to mention that it also works great for low-impact workouts.
Nakoma recommended this style