C.S.
As a 34DD normally (pre-children) and having been up to a J (you read that right!!!) during nursing days, I have never had much luck with the regular stores like Motherhood Maternity, Target, etc. My suggestion is to go someplace like those mentioned - Upper Breast Side, Town Shop, or Intimacy (which is on Madison in the 80s) and get fitted. Once you find a size/style that works, you can look online for the best price - two sites I like are BiggerBras.com and, believe it or not, eBay (many people sell them new, in the packaging, for less than retail). These sites are also great for regular bras, btw. I have also bought many of my nursing bras (and nursing tops) from Motherwear - they have a wonderful/easy return policy. For sleeping I liked the Bravado bras, they are soft and easy to snap open/closed when half asleep - BUT - they gave me no real support when standing up, so they were sleep-only for me. Personally I hate sleeping in a bra, and stopped doing so as soon as I stopped leaking - but some women like the extra support even at night. GOod luck. I have nursed 3 (still nursing #3 actually) and it is a great experience.