i too, share your frustration. even if you can find D cups in lingerie... they aren't "true" D cups, and they offer NO support. i can't believe that with all of the materials, new fabrics, etc. out there that someone can't make a better bra for a large breasted woman. swimsuits are at least
starting to get a little better.
I have found that i have to just suck it up and spend the $$ if i want something nice that fits. And when i find something that looks and fits great... i almost never pass it up... it's much too rare a find!
you are not alone in this one...