Britney Spears has returned to her roots. The Womanizer singer has spent 9 hours in the hair salon to go back to her classic blond hair. She went to the Grand Star Jazz Club in Los Angeles and displayed plenty of sex appeal, reports Britan’s The Sun. In other news, Britney is telling ex-husband Kevin Federline to lose weight as she doesn’t want their children to think it is OK "to be fat and sloppy."