Do the breast pumps for enlarging breasts actually work?

Perhaps: It may help decrease the fullness due to milk supply, making nursing a baby easier.

Maybe: You probably are breastfeeding your new baby, right? Breast enlargement or swelling is very common within the first few weeks of breastfeeding. Putting the baby to your breasts to nurse as often as possible will release your milk and reduce the pressure within your breast. Your baby will de a better job of emptying your milk compared to a breast pump which usually is not necessary.