Nursing Bra Tank by Bravado
I just found these really cool breastfeeding hospital crib cards from the CDC.
They point out the advantages of breastfeeding such as less chances of being overweight, fewer ear infections, less chance of diabetes, among others. They also give you the hunger cues such as hands in mouth, searching from side to side, stretching and lastly crying (which means you are late!).
The intent is for the hosiptals to put them on the cribs but you can always print one out and put it there to remind the nurses you are breastfeeding.