Why are womans breasts and nipples all different shapes and sizes?
Same reason why eyes are different, hair is different, and skin is different, and everything else about our bodies. It’s because we all get unique sets of chromosomes that form our bodies differently, and then hormones and other building mechanisms of our bodies work in different ways. Some chromosomes directly affect a trait, but some traits rely on many chromosomes. I am pretty sure there are many needed to determine breast and nipple size. Also, you’ll notice that most of everything on our bodies that come in two’s are different. Like, a girl’s left breast make be a bit smaller than the left, and most people have uneven eyes. Body-creation isn’t perfect, but it’s good enough.
