I am a 40C, and pretty much can buy any bra off the rack without even trying it on. Usually, I need to start in the looser hooks and move down over time as the fabric stretches out from wearing and washing.

This bra at a 40C is too big! I put it on the tightest hooks, and the stiff fabric slides around on my skin and does not stay in place. The "girls" even float around in the cups! At first it seemed ok, so I wore it to the gym and now I can't return it.

I think that if i had gotten a 38C or a 40B (or maybe even a 38B?) I would like this bra. If only I didn't hate shopping so much and I went to a store where I could have tried it on! ;)