Why are my baby’s lips no longer curled out on the breast?
When a baby tries to latch onto a full, round breast, the lips naturally roll back from the mouth. When the lips do this, they are said to be “flanged.” This helps create the seal between the baby’s mouth and the breast, allowing the baby to hold the nipple and the tissues behind it in the mouth. After a few weeks of breastfeeding, the breasts are not so full. The baby’s mouth does not have to open so wide, so the lips will no longer be flanged.