M.,
I have had trouble for years finding the right bra to fit my odd-sized bust. Just last week I went to Kohl's determined to find a bra that finally fit. After an hour and a half search I was frustrated and almost in tears because nothing fit.
I finally asked one of the lingerie staff and she recommended a specialty shop that carries a huge selection of bras and even does bra fittings.
That afternoon we went and the owner of the store had the right bra on my body in less than 5 minutes. I have worn that bra over the last week and absolutely love it! It doesn't hurt or pinch, my breasts don't ache at the end of the day, and it stays in place - just as it should.
Here's my recommendation - call your gynecologists office and ask if they recommend any specialty bra shops for women with odd sized busts or for women who have had a mastectomy. These shops will most likely also carry bras for average women and will be able to help you find what will fit your body.
I couldn't believe it when she put a 38-G on me and it fit perfectly. No wonder I couldn't find what I needed at Kohl's.
Even better, the bra I purchased was the same price as the bras I was trying on at Kohl's. She also helped me find a really good sports bra. I'm going back next week to pick up a few more dressy bras so I have a selection each morning.
Good luck with your search.
-C..