Schwarzenegger-Shriver Daughter Pens Book

California First Daughters Katherine (L) and Christina Schwarzenegger introduce their mother Maria Shriver during the Women's Conference 2008 at the Long Beach Convention Centre in Long Beach, California, on October 22, 2008. The Women's Conference event is the largest and most dynamic gathering of women in the nation. Recognized for its unparalleled capacity to empower and inspire women to become architects of change, the annual conference unites more than sixty internationally-acclaimed leaders and visionaries with 14,000 women. AFP PHOTO/Jewel SAMAD (Photo credit should read JEWEL SAMAD/AFP/Getty Images)
Katherine Schwarzenegger is following in the footsteps of her high-achieving parents, California Gov. Arnold Schwarzenegger and Maria Shriver.

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.