If you see a linea nigra, not pregnant or if you are pregnant, know that it comes from the hormone that stimulates melanocytes in your body. A linea nigra measures about a centimeter wide and goes in a vertical linefrom your belly button to your pubic bone. Some women even have them run all the way up their abdomen. not expensive prom formal gowns below 100
Always wondered wth I have this line from my navel down, welp now I know.