How many of you have discussed body parts with your growing kid? my 9 year old knows about breasts, but i have not yet told her about the vagina. when did you first discuss it with your daughter? or did you never talk about it?

I do talk to my kids, both son and daughter, about their body parts. My daughter knows about breasts and is aware between the difference in a vagina and penis but I havent told her about vagina in detail yet. She knows its meant for urination and child birth. Also, I have given her some idea about periods but nothing related to sex. Will impart her knowledge once she grows up a bit more. She knows that nobody is supposed to touch her there.