I wear a 40 D and I am happy with that, but I wish the left breast would catch up to the right breast. I the past year or so, I seem to have developed a significant amount of asymmetry. I might consider a BA if I want to even things out.
I am somewhat doubtful if a BA is in my future because right now breasts are just not that important. I have enough already and breasts just feed babies (no longer needed), attract men (sometimes unwanted) and get in the way (all the time). Problems, problems, and more problems. What is a girl to do?