Just in time for the 1998 Winter Olympics in Nagano, Japan, here is a double biography of the two young women at the center of the hottest rivalry to shake the ice-skating world since Nancy Kerrigan and Tonya Harding. It all began last year when 14-year-old Tara Lipinski unseated then-champion Michelle Kwan, first at the U.S. Championships and then, a month later, at the World Championships. With eight pages of full-color photographs, this timely,...