Your nipples should be growing as you grow, this includes your breasts. There is no exact age although usually around your early teens they should start to develop and then stop usually late teens. Although as I said there is not set in answer.
I'm guessing you mean breasts here since we are all born with nipples. Girls develop breasts when they are in puberty and that happens between the ages 10-18.
whenever your puberty starts
between:13-18
Yes they do my two girls are both 23weeks and they have nipples :)
because they are growing.
Some do and some don't.
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
NO! i bet the person that asked this is a sick perverted moron
It looks like two big and fat orange.
of corse
The nipples get larger so as to better suckle the baby.
Yes hairy nipples are normal for Men... but for girls they usually dont grow hair around the nipples.
Yes
Boy guinea pigs don't have nipples.