The body positivity movement is reaching a younger audience with a new children’s book that teaches girls to be proud of their bodies.

“Her Body Can” is described as “ a poetic declaration of self-love and body positivity for all young girls.” The children’s book was written by bloggers Ady Meschke and Katie Crenshaw who told Glamour that they wanted to “portray a plus-size kid living her best life, with no apologies.”

The book follows a young, plus-size protagonist as she runs a marathon, travels, and wears clothes like crop tops—which the authors’ say they were told not to wear throughout their lives.

“The book is definitely about teaching kids not only to accept and love themselves, but accepting and loving others for their differences too,” Meschke said.

Meschke and Crenshaw’s mission is to prove that all bodies are “good, capable, and miraculous” through “Her Body Can.”

“We want to encourage girls from ages 1 to 101 that your body CAN,” they explain on their website. “What your body looks like is irrelevant. When you connect to your inner self and focus on what you can DO, unconditionally loving and honoring your body becomes one of the centerpoints of life.”

The surge of body positivity has spilled over into media in a variety of ways—especially fashion campaigns like Aerie, which vowed to stop photoshopping their models in 2014, and Rihanna’s lingerie brand Savage X Fenty, which uses a diverse group of women in its ad campaigns and fashion shows. The demand for body diversity has led to Victoria’s Secret’s fall from grace and celebrities like the Kardashians being slammed for promoting diet products.

Research shows that people with positive body image are more likely to have healthy mental and physical health.

The authors of “Her Body Can” say they plan on releasing “His Body Can” for young boys, as well as other sequels with kids from different backgrounds, for future projects.