What happened to Winnie Cooper? Well ... she grew up: Danica McKellar stripped down for Maxim in 2010, proving that she's definitely not a little girl anymore. Since her days as Kevin Arnold's crush-turned-girlfriend, Danica has written three New York Times children's best-sellers, each encouraging girls to enjoy and succeed at math. In June 2012, she and her husband, composer Mike Verta, filed for divorce. The two will share custody of their 1-year-old son.