Answer: The cosmetic features of a belly button can be divided into 3 categories.
In general the location of the belly button an the abdomen is just below the level of a horizontal line drawn across the top of the hip bone. If it is measured the bottom of the belly button in most women would be about 10-12 centimeters above the pubic bone. Also the belly button is not usually exactly in the midline of the abdomen. It is usually off to the left or the right of the midline.
In general when planning a tummy tuck these are loose guidelines for where to relocate the belly button in order to get the most natural appearance.
I will discuss the size and contour on a different post. For more information about tummy tuck surgery, please visit: