Still, even with a protective set of parents, Katherine Schwarzenegger -- who is now a junior at the University of Southern California -- says she became "self-conscious" about her weight in her middle-school years. She tried to ward off such feelings by undertaking an informal contest with a friend who was naturally thinner to keep their weights beneath 100 pounds. (Schwarzenegger is now 5-foot-8 and a size 6, the paper says.) But weight loss didn't become the obsession for her that it did for many girls, she says.