I'm a 39 yr old mother of a 10 yr old girl who's just started asking questions about getting her period and developing. I remembered my mother giving me this book when I was 11 yrs old and how much I loved it. My daughter said it was the best book she's ever read (and she reads consantly)and it opened up discussion on these topics. It's all about little girls waiting for their periods to start, wearing bras and wondering about boys. It is so wonderfully written! My daughter has asked me to buy her more books by this author. We both highly recommend this book for your daughters.