Hee hee! My DD and I recently had "the talk" as they will be covering just that in school later this year. I wanted to get to her before the school did, and with DD#2 recently being born (DD#1 was there for the birth) I figured she would be ok with it all (not to mention being turned off child birth for the time being!).

When I was around 11 years old, my mother handed me a book called "What's happening to me?". It is in cartoon form and actually quite funny (I can't remember who the author is), so I sat down with DD and read through it with her. She was then able to ask me questions and we had a bit of a laugh about some of the cartoons. She has since asked more about what happens when we get periods, and breast growth and all sorts of wonderful things you want to talk about while driving along!

Good luck with it!