London, Mar 04 : Pop star Britney Spears' ex-husband Kevin Federline is being paid 3,500 pounds a week to join her `Circus' tour in a bid to let her kids Sean Preston and Jayden James be by her side.
Ferderline, who has the custody of the two children, has accepted the offer to join the tour, which started on March 3.
"Kevin has custody of the kids and is being paid so they can be with their mum on the road," the Sun quoted a source as saying.