Hi, I'm back again. I ordered a CK tease me in a 28DD as the wires seemed too narrow in the 28D, but although the wire width was better, the cups were still huge.
I also tried the Panache Tango II in a 28D and 28DD - huge fail. Again, the wires were the right width on the 28DD but the cups were tight at the top and hugely wrinkly elsewhere - it looked terrible!
I haven't had a chance to go into bravissimo, but I am actually scared of being laughed out of the shop - I haven't yet met a D cup bra that I can actually fill the cups of! Everything I've ordered previously has come from amazon (free delivery and returns - yay!) but I'm running out of options.
So, any more suggestions?