Kari, I don't know where you live, but I have had major issues with my daughters finding the right size bras, and found the most amazing store on a trip to Atlanta, then a trip to New York. not sure where else they are, but the brands we got are not a Nordstrom, which used to be our go-to place for bra shopping.
I am a 30DD with a lopsided issue due to cancer, one DD is 34 E and one is 38 I. Yes i! She was having trouble finding ANYTHING until we happened upon the store: Intimacies is it's name, and it has been a godsend! Her bras are really expensive, but she is comfortable for the first time, and they treated her with respect, do that she didn't feel like a freak. She was actually smiling when we left. And no more tugging and sagging, which can be very uncomfortable, especially here in Florida. Now, I can just order more from the store, as hers get worn out or "strained" out more often than mine or her sisters. I found the first bra I could actually wear and feel normal in since my surgery 6 years ago. I feel like a pretty woman again. Worth a visit if you are anywhere near one of their stores or plan to travel