More Britney news... Spears and her soon-to-be ex have mutually agreed on a custody arrangment for the month of January. The agreement was filed today in LA Superior Court and stipulates that the couple share joint custody of sons Sean Preston and Jayden James for the month, with Spears having primary physical custody. KFed will be allowed to visit the children from noon to 4 p.m. on Mondays, Wednesdays and Fridays at Spears's home. Both parties are seeking sole physical and legal custody of the children in their official divorce petitions.