I would say go get measured professionally and they will have the best advice for you. I went to a specialist lingerie shop and they were brilliant - I found thembetter than myer of DJs for the attention etc. I agree with Del Dove though if you get them to fit later they may not fit now... i would get them to fit now and then work out what happens later, later. Thats pretty much all you can do. The ladies did recommend I go up a number and go on lowest clips rather than near the top of the lower number so I had room to grow even if not on cup size.