Britney's album out in '2011'

The "Toxic" singer has started working on new album with producer Max Martin.

Britney has started working on a new album, slated for a possible Spring 2011 release.

Her manager, Adam Leber , tweeted, "Britney is working on the new album. It's going incredibly well. Possibly off to best start yet. We have some amazing tracks. No release date set".

The "Toxic " singer is said to be working with producers Max Martin , the man behind hits such as "Baby One More Time " and "Oops...I Did It Again !" and Dr Luke , who's recently worked with Katy Perry , B.O.B. , Taio Cruz and Kelly Rowland .

Rumours that Britney is also working with producer William Orbit have surfaced on the internet, but have yet to be denied or confirmed.