What a problem! I commiserate, because bras have always been misery for me. I must have ones either all cotton or cotton with just outside synthetic. I must change and wash daily because I seem to do all my sweating under my breasts. I list to one side, even since I was a teenager with smaller breasts--I list no matter what I do to try not to, and I did so as a teen even when in superb health. So I always have one strap down my shoulder. My mom nagged me about standing up straight, of course, even though I was a ballet dancer...bra strap down the arm no matter what I tried. Used to wear those things you sew in shoulders to hold bra straps, but as I got older I said, that is one more thing to work on and my hands don't sew things well now either.

I'd though of trying AAh or Genie but they look like hard to get on, bad for my painful shoulder that needs an operation like the other one had, but I'm not up to more anesthesia risks or expensive trips out of state to a fine surgeon and anesthetist.

So I struggle along with the "Downtime bra" from Hanes catalog, which is mostly cotton and has good support, a hard combo to find. Or buy from the all cotton catalog called
Deva, using the sports bra they have, since it is the only one firm enough. They Hanes catalog has many bras to put protheses in, too. They have always been a good source for me.

I have much bigger breasts and rib cage than when younger, and my size has gone up.
I do sometimes wear a muumuu at home so I can be bra-less. Muu-muus are a pretty good concealer as to what you have or have not. I see some for sale in the Vermont Country Store catalog but have not ordered. I used to have many muu-muus from Hawaii, but now they are all worn out or too small. I never expected to be a 40 C/D. What for? No nursing and vamping planned.