What causes different shapes of belly buttons?

Actually they form underneath the umbilical cord as it dries up and when it falls off: tada! There's the new babies belly button : which can change over time but quite literally is individual on every person. read more

Actually they form underneath the umbilical cord as it dries up and when it falls off: tada! There's the new babies belly button : which can change over time but quite literally is individual on every person. There's no way the mother of the child or anyone else has any control over how the belly button looks when it's healed up. read more

I don't think it is known exactly what factors cause the belly button to be concave or convex. The best guess is that it depends on the way the scar forms, including the way the abdominal muscles close up after the baby is born, the opening is no longer needed, and the umbilical cord falls off. read more

But pregnancy can cause navels to change shape. "The expansion of the abdomen can cause some 'innie' belly buttons to pop out and become outies," Dr. Karen Marie Jaffee, an obstetrician-gynecologist affiliated with University Hospitals of Cleveland, told Everyday Health. read more