She had the cutest little innie belly button since she was born. Now, at 15 motnhs old, over the last week it seems to have metamorpasized into kinda of an outie. Now, she hasn't gained any weight. In fact, I just found out yesterday she's in the 5th percentile for weight. I forgot to ask the ped about the outie thing (pregnancy brain has taken over). Does anyone know what could have caused this? Has anyone heard of this happening?