Just as in her book, Ashton said, her aim is to end some of the confusion young girls face during puberty.
However, Ashton said, it's the young women she spoke to who taught her a thing or two.
Click on the video below to see Ashton's candid conversation with these seven young women.
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Ashton added on "The Early Show" there's a recommendation by the American Congress of Obstetricians and Gynecologists that girls should first see a gynecologist between the ages of 13 and 15.
"That has absolutely nothing to do with sex or contraception or birth control. That has to do with teaching our teenage daughters about their overall health and wellness," Ashton said.
She said a gynecologist can also address breast health, bone health, acne, and problems with periods -- as well as sexual education.
"It's a huge topic," she said. "They need a pediatrician and a gynecologist."