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Naama Bloom, the founder of the HelloFlo monthly subscription service for tampons and pads, has now written a book designed to help girls who are close to or are going through puberty. Called The Guide, Period, the book is billed as a modern and insightful guide to periods and puberty for a new generation, and it's designed to empower young women during a time when they often feel embarrassed and uncomfortable.

"My dream is that girls feel very confident in their bodies and feel like they love who they are and how they look and what their body does," explained Bloom, who has an 8-year-old daughter and 6-year-old son. "I just want to have these open conversations so that they know that there's nothing shameful about their bodies."

To that end, The Guide is full of practical advice, helpful explanations, and messages of encouragement. And it answers such pressing questions as: When will I get boobs? Does wearing a tampon hurt? What's the deal with menstrual cups? And seriously, when will I get boobs?

Bloom told CNN the book is for girls ages 9 to 14, but that parents know what's right for their own children best. "Girls younger than 9 who are exposed to more may be ready for it," she said. "The second (a young girl) can look on Instagram on her own and have access to the Internet, i think it's important for her to have this book."

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Go buy your own copy here. Period.

Hollee Actman Becker is a freelance writer, blogger, and mom of two who writes about parenting and pop culture. Check out her website for more, and then follow her on Instagram