Quote Originally Posted by Kathi View Post
Cup and band size is relative. If you go down a band size you normally increase a cup size to maintain the same volume. For example, 34D-32E-30F-28FF-26G. If you go up band sizes you decrease the cup size.

I don't know how weight loss affects this, I'm guessing it depends on where you lose the weight from.
Right. I tend to lose pretty evenly...pre-breast reduction I went from a 38DDD to a 34DDD when I lost ~40#s. Even after reduction I still lose evenly. But it's a lot easier to find a 36D than it is a 32D or 30D -- at least in the US. I know in the UK there's a lot more selection for small bands and relatively large cup sizes...but at a cost. Some women are unfortunate that they lose around, but not in the cups.