Young Brunette Girl With A Navel Piercing Reveals Her White Thongs At The Window

The actual navel is not pierced when a navel piercing is performed. The most common form of navel piercing is through the upper rim of the navel. A true navel piercing requires the person being pierced to have an "outie" navel to some degree, and is getting more popular these days. This kind of piercing is popular with, but not exclusive to females.
History and culture
In ancient times the body piercing was considered as sign of manliness and courage. The Egyptian Pharaohs brought earring at the navel that was a sign of ritual transition from the life at the Earth to the eternity.