
I'm quite happy with this bra. I bought both this and the Platex underwire nursing bra, both in 38D, and the Platex was way oversized. This one is perfect as it would stretch even if you're a bit bigger or smaller. After all, who really is a perfect 36c or 38D or whatever. Everyone is probably in between sizes, especially while nursing.
The only reason I didn't give this bra 5 stars is that the band at the bottom folds and can get slightly uncomfortable. But the material feels worlds better than the Platex bra.
I don't think this bra can be doubled as an exercise bra. Buy a decent, real sports bra for that. But nursing, both as a sleep bra, and as a regular wearable one is definitely fine.
Buy Gilligan & O'Malley® Nursing Sleep Bra - Ebony!