Spears' ex 'won't let son perform'
Britney Spears' ex-husband Kevin Federline apparently doesn't want their eldest son to join his mum on stage during her Las Vegas residency.
The former X Factor USA judge is reported to want eight-year-old Sean Preston to appear in her Piece Of Me gigs during the two-year stint.
But Kevin hinted that he thought his son was too young, telling TMZ: "I mean ... we'll see about that, won't we."
Asked if he'd like to see Sean Preston on stage, Kevin, who tied the knot with his long-term girlfriend Victoria Prince earlier this month, replied: 'Yeah, if he was like 25 years old."
Sean and his brother Jayden James, six, joined Britney in her video for the Smurfs 2 soundtrack single, Ooh La La.
Britney, who was married to Kevin from 2004 to 2007, recently hinted: "Preston will probably be on stage but I think Jayden would have a hard time with it."
The music star is reportedly set to earn more than 300,000 dollars a show when she starts her new residency.