Hi
I had 300 mp unders, I was a 32a and I have found 34c fitting well. It does depend on brand though, I mainly wear a m&s zip up sports bra as that’s most comfy, that’s a 34c but I have a shock absorber in a 32d and it’s far too small over the boobs! Only had my op on the 25th August so still early days but I imagine they will end up a 32c/d, spot on what I asked for. I bought a couple sports bras in both 34c and d and took back what didn’t fit. Happy healing x