Britney to Pay K-Fed $20,000 in Child Support

By Ken Lee

07/18/2008 at 03:00 PM EDT

Britney Spears's custody settlement with her ex Kevin Federline, in which he retained sole custody of the couple's two sons, came at a price.

A source close to the singer confirms she'll now pay Federline $20,000 a month in child support, an increase from $15,000.

Federline's lawyer, Mark Vincent Kaplan, also demanded and received $250,000 for his work on the case, the source adds.

"All Britney was seeking was a formalization of her increased visitation that she's obtained over recent weeks, and the additional overnight," the source said. "She won both of those requests."

Spears, who is represented by lawyer Laura Wasser, currently sees her sons twice a week with one overnight. The source adds that she will get an additional overnight by year's end, barring any setbacks.

At a press conference following Friday's hearing, Kaplan declined to address any monetary settlement. "This has been a long ordeal [for Kevin]," Kaplan said, "and for it to be over makes him very happy."