Britney Spears & Kevin Federline Reunite At Preschool Graduation

Britney Spears and Kevin Federline put on a united front at their sons' preschool graduation, People reports.

The 28-year-old pop star - who was joined by parents Jamie and Lynne Spears - and her ex-husband arrived separately at a San Fernando Valley school Thursday (June 24). Sean Preston, 4 ½, and Jayden James, 3 ½ were later treated to McDonald's Happy Meals after the ceremony, a source reveals.

Reportedly, Britney "was very excited about her boys' graduation and she dressed them up for the festive occasion," the source says.

Britney and Kevin wed in 2004 and split in late 2006 before finalizing their divorce a year later. In 2008, Kevin was permitted sole custody of the kids while Britney, who is under conservatorship of her father, was allowed several weekly visits.