Your belly button's shape, determined by umbilical cord healing, is believed by some to reveal personality traits and even ...

The belly button, it turns out, is one of the least-studied parts of the human body. But one of its great mysteries may now have been solved – why most people have an innie, or concave belly button.

The reality alum said her mom found out after reading her diary, admitting “I could never do something like that today” Charles Sykes/Bravo via Getty Kristin Cavallari said she pierced her belly ...