oh man i feel everyones pain. im a 36 DDD, but i have such tiny shoulders that i absolutely have to get the racerback style, and have you EVER tried to find a bra bigger than a C cup in front hook/racerback? its like the loch ness monster
i buy mine on ebay, if its a brand im unsure of i get the cheapest ones in 2 or 3 different sizes (36 and 38, DD and DDD), and then whatever one fits when they arrive, i go back and order 5 more and wear them until they fall apart
i second lane bryant, have you also tried Fashion Bug/Avenue/Torrid?