I am 5'6" 121 lbs size 32A bust with an athletic build. I originally ordered a size S. I unfortunately could not even get it over past my shoulders. The band of the bra is not stretchy at all, and I had to return it. So sad since this could have been a very cute fitness crop top.
I love the bra in general. I purchased the gray in medium and usually wear medium sports bras. I did not look at the sizing chart, but I wear a 36d and the bra was snug. However, I plan to order other colors in large. Overall, I like it. Holds me in while running, but by the end of my workout I look like a nutbag trying to get out of it. :-)
I like this bra but unfortunately it doesn't fit the best for me. I am a 32DD (in real sizing, not VS) and I am am between a medium and large in this sports bra. I kept the large and wear it during the day and more as a bralette, this bra is fine with strength training but other than that it doesn't offer the best support for me. It is super cute and the fabric seems great. If it fit me better I would say that it is comparable to my Lululemon bra that is the same style.