It does exists. Yes! Breastfeeding makes and sells them. It's there size 2++. There website is not really functional. It was yesbreastfeeding.com. They do sell bras mainly to other sellers, so you can find them you just have to look around. We have a breastfeeding store in town in the back of a postal store and they carried them.
Through the website or independent sellers the price is 19.95. It's soft and comfortable, sports syle. Since they are so hard to find, I have just two identical bras and I've lived in them for over a year now. I would love something more fitted with more support, but I get so frustrated looking for a bra to fit. I'm a 30D, so I totally understand. I'm jealous every time I see cheap bras in Walmart/Target and they do not come close to my size.