BRITNEY Spears has been granted joint custody of her sons, it has emerged. Since the Toxic hitmakers public meltdown in 2007, ex-husband Kevin Federline has been primary carer of Sean Preston, 4 and Jayden James, 3. However, a Los Angeles Superior Court judge has now extended an order originally put in place during Britneys Circus tour, reports The Sun. Britney now has minimum 50/50 custody - and at times even more - according to US website TMZ. According to reports, Federline will receive between 20,000 dollars and 25,000 dollars a month. TOI when the boys are outside of California in addition to the 20,000 dollars a month Britney already pays in child support. The judge will review the arrangement at the end of the year. TOI