Katherine Schwarzenegger is an author ... Times best-selling author at the age of 21 after publishing her first book, Rock What You've Got. In 2019, she married Chris Pratt.

Katherine Schwarzenegger's family is even more famous ... starting with her 2010 book Rock What You’ve Got: Secrets to Loving Your Inner and Outer Beauty from Someone Who’s Been There and ...

In her upcoming book "I Am Maria," the 69-year-old details ... Shriver — who shares kids Katherine Schwarzenegger Pratt, 35, Christina Schwarzenegger, 33, Patrick Schwarzenegger, 31, and ...