The 20-year-old college student has written a book coming out next week that's aimed at helping girls gain confidence in their bodies and themselves. It's titled "Rock What You've Got: Secrets to Loving Your Inner and Outer Beauty" (Hyperion).
Schwarzenegger says part of the motivation for the book was overhearing her preteen cousins talk about their desire to be thin and "sexy." She's also faced her own battle with self-esteem as a teenager in the public eye.
The book is the first for Katherine Schwarzenegger, a junior at the USC Annenberg School for Communication & Journalism. Her mother, a former NBC News correspondent, also is an author.