Linea nigra aka my "shrimp poop line"

I started to notice a very faint, thin, darkish line that goes down the center of the top of my belly button. I googled it and found out it is caused by pigmentation in the skin where your abdominal muscles stretch and slightly separate to accommodate as your baby grows. It's due to an increase of hormones. I am fascinated with it's strange symmetry and perfect ruler-like line.

weird. i like.

yeah, that's my baby girl in there. :)