Troubled singer Britney Spears has now reportedly accused her ex-husband of sleeping with her own mother Lynne.

Britney - who is at war with both K-Fed and divorced Lynne- is apparently furious that the pair have united against her, resulting in a furious row with her mum.

"I suppose you're sleeping with Kevin now as well?" the News Of The World reports she shouted at Lynne.

A source explains, "Britney is fuming that K-Fed has become so close to her mum."