Jesobel Jones is bold and brash, the daughter of a hand model and a washed-up rock star. Jess sees no need to apologize for her rambling house, her imperfect family, her single status … or her weight. Jess is who she is. She makes her own cupcakes and she eats them, too. No regrets.

That is, until Own Clothes Day rolls around at school. Jess and her friends dedicate the requisite hours of planning to their outfits, their hair and their makeup for the one day they are free from school uniforms. But a wardrobe malfunction leaves Jess with a pair of leggings split open at the worst spot, and a mean girl calling her the one thing that’s never bothered her before: fat.

The encounter shakes Jess’s formerly iron-clad confidence, and she starts to wonder if she’s been just a little too comfortable in her own skin. When the boy of her dreams invites her to a party, she must decide whether to try to fit in for the first time in her life, or remain true to herself — whoever that really is.