The star says she's written "plenty of stuff" for the follow-up to 'Britney'...

BRITNEY SPEARS has announced she has started work on a new album.

Spears told American reporters that she has been working on the follow-up to ‘Britney’ for “a while”

“I’ve written plenty of stuff. It’s really cool, really good.” She told MTV. However, she was unwilling to say who she has been writing new songs with. “I can’t tell you, then it won’t be cool when it comes out,” she joked. “There has been a couple (of producers) overseas.”

The UK press have speculated that Spears has been working with Guy Chambers, famous for his songwriting with Robbie Williams.