I haven't left the house without a bra on since I was 15. Hit puberty, and went from undershirts to underwire C cups. Hit D's in highschool and graduated as a DD. I'm now (at 28, 5 ft tall) a 36 I/J depending on the cut. It is virtually impossible to find bras in my size, even on the internet. And the ones I do find run $60-100 per bra. If you're on a fixed income, it's difficult to afford. And forget about finding a bra in any other color but white or beige. Lace?? Never find it. Sports bras are out, too...at this size I'd have major uni-boob action going on, plus little to no support. And since I could give myself a black eye running up a set of stairs...
My biggest issue has been the "third boob effect". That bulge of breast that sticks out over the top of the cup. Since it's so hard to find bras in my size, I cope with what I can find, and then cover it up as best as possible with tops. It's not a great solution, but until I can afford bras that truely fit...