Kevin Federline has suggested he wouldn't let his young son Sean Preston perform alongside his ex-wife Britney Spears during her concert residency in Las Vegas.

Kevin Federline, who was married to Britney Spears from 2004 – 2007 and is the father of her two children Sean, 8, and Jayden, 6, has said he won't let his sons perform with their mother during her Planet Hollywood Hotel Vegas residency.

When asked by reporters about their alleged performance in the Piece of Me show Federline said: ''I mean ... we'll see about that, won't we.''

Speaking in particular about his oldest son Sean the former dancer said: ''Yeah, if he was like 25 years old.''

Britney Spears begins her Vegas residency this December