I have struggled to find a comfy sports bra that would be suitable for running since I had my baby and became a nursing mother. Basically I went up three cup sizes! This bra is super comfy, I hardly realize I have it on. It is great for pilates and good for running too. I am a 36 DD but closer to a 34 than a 38. The band does run a little small so for me the 36 works fine but if you are close to a larger band size, buy the larger band size. Otherwise it fits pretty true to size. The straps have  comfy gel underneath and while the band fits snug, it is super super comforable. Highly recommend. I already ordered a second one.