Most women are physically able to breastfeed. It is rare for a mother to be physically unable to breastfeed. It doesn't matter whether you have very small or large breasts, or if you have inverted nipples. Most of the larger breast is made of fat and the milk-producing (mammary) parts are very small. Your breast tissue is designed to make enough breast milk for your baby. If you have twins, it is usually possible to make enough milk for both babies.
This is a companion discussion topic for the original article at https://patient.info/pregnancy/feeding-your-baby/breast-feeding-your-baby