To find out how stars like Katherine Heigl came to be who they are today, InStyle got the inside scoop from some reliable sources â€" their moms.

InStyle asked the Grey's Anatomy star and her mother both about Hollywood:

Katherine Heigl: "We put all of our stuff in the back of her Jeep â€" we were supposed to share the driving, but I had just gotten my license and I was nervous. We stopped to see my grandmother before we left and she had these old romance novels. My mother made me read them aloud as she drove."

Nancy Heigl: "We just packed up our bags and went to L.A. to seek fame and fortune. Sometimes I look back and think, 'I can't believe I did that!' It has really been an adventure."

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.