I had really worried about getting massive (.)(.)s as mine were pretty massive to start with (36H) and I panicked that there'd be nowhere to go bra-wise. However, all that's happened is that I've got a bigger back size (probably from eating and get podgy) but the cup has remained the same.
So now, if I get knocked down by a bus at least I'll still have pretty bras to compensate for the big pants. Oh how the A&E staff would laugh...