Love this. I originally ordered a size 1 (using the size guide based on my measurements), but that felt particularly small (both the chest band and the "cups", so I exchanged for a size 2, which fits well. I'm typically a 36A and there is a small gap that pushes out in the middle of the cutout, which would likely show under a tight-fitting shirt made of thin material. If you were larger-breasted, I doubt this would be a problem.