Trusted company, thoroughly explains growing up for girls in pics and words. I had one of these when I was young and gained insight to things I felt uncomfortable talking about, it helped a lot. Same book, probably updated, I'm sure. Bought for my 9 year old daughter who is showing signs of prepubescent changes. Cheaper online!
I bought this book as it was highly recommended from other moms with younger girls as well as great reviews online. It did not disappoint. While we haven't read through the entire book, my daughter wasn't so nervous about buying her first bra because she understood that this is something all girls go through and she is not alone. It was put into better words than I could have explained to her.