An updated edition of the book, which for many years has been helping young readers find out why their body and character are changing, and how to cope with these changes. Girls will learn what menstruation is, why breasts grow, how to choose a bra size, what to do if you have feelings for a boy (and what you should never do). The book will also be useful for parents - it will be an excellent assistant when talking with their daughter about puberty. Published in Russian for the first time