For the same reasons as a males nipples go hard it is the result of increased circulation of blood.
it's called arousal. google it.
We don't. They get hard when it's cold or some women get hard nipples when they are aroused. Same reasons some men have it actually.
Nipples turn hard when you get cold or when girls really get turned on.
Because it is genetic, ony ten percent of girls have inverted or nipples that face in whereas the other ninety percent have nipples that go outward
so there nipples go hard
Depends what you do with them and how sensitive she is. Some have soft nipples and others hard. Contrary to what many believe, the nipples does not have to be stiff when she is aroused.
they go hard and you blow your load.
Girls have nipples from the time they are born, perods have nothing to do with them.
Yes you can some girls like there nipples sucked on some don't you can
nipples nipples perverts!!!!!!!!!!!!! u guys or girls need help... go take ur meds... retards!!!!
The same way you make a guy's nipples hard.
dont u have nipples? and no they dont turn dark they freeze up and go a little hard u wrongen