Sandra Bullock adopts baby, files for divorce from Jesse James

sandra-bullock-people-cover-zap2it.jpg Sandra Bullock has managed to keep at least one thing about her personal life to herself recently: her adoption of an infant born in New Orleans.

Bullock is on the cover of People this week with her son, 3 1/2-month old Louis Bardo Bullock -- whom she says she'll be raising as a single parent. Although she began the adoption process with husband Jesse James several years ago, the revelation of his affairs following her Oscar win has led her to file for divorce, the magazine says.