I also have no direct experience, but suggest calling or emailing the customer service folks at TE. As far as I know they don't have any sports bras specifically designed for nursing, but they might be able to help you find something that works for you, in terms of size, support, etc. They know their product line very well and are always very helpful.

Also depending on the climate where you live, you might want to add a cold pack to whatever bag you use to carry the insulated bottle. like the ice substitutes they sell at The Container Store:

http://www.containerstore.com/shop/k...IceSubstitutes

Good luck!!