I went yesterday and got two maternity bras fitted at bras n things ... i changed size from 10 to 14 as the girl indicated most of the movement and change will be around you as well as cup size but i am normally a D cup and went up to a DD cup - and they tested the same with the fist inside as i still have more to swell .... excellent i say not lol they are big enough already lol but i bought two as what i have now are underwine and nearly not anywhere near as comfortable as they used to be ....