Your Baby: Growing Inside And Out
At this point, your baby weighs roughly 2 pounds (900 g), and measures about 15 inches long from head to toe (10 inches from crown to rump). On the outside, his skin looks wrinkled from floating in water. So don't be surprised if your newborn has a crinkled, prune-like appearance for a few weeks after birth as he fills out into a baby. The lungs and immune system are still continuing to mature during this period of time.