Jamie Lynn SpearsBritney Spears‘ uncle has claimed that her younger sister Jamie Lynn Spears is following in her parents footsteps with her unplanned pregnancy.

Jamie Lynn revealed in December that she was pregnant with boyfriend Casey Aldridge’s child and now William Spears, the brother of the sisters’ dad Jamie Spears, has claimed Jamie Lynn herself was an unplanned pregnancy.

William is quoted as saying that Jamie was livid when he found out then wife Lynne Spears was pregnant with their third child - because he’d had a vascetomy after they had Britney nearly ten years earlier: “Jamie got awfully mad. He said it couldn’t be his.”

Eventually a paternity test proved that the now 16 year old was his daughter: “That’s why they named her Jamie Lynn, to kind of make the point that she was from both of them.”

In related news, Team Britney has denied rumours that the star is herself expecting a baby. Her on-off boyfling Adnan Ghalib is said to have told friends that Britney is pregnant with his child but her spokespeople have denied the story.

The singer had another visit from her young sons yesterday though, following on from similar successful sessions last Saturday and on Monday. Legal teams for Britney and her ex-husband Kevin Federline are said to be in ongoing discussions about making thrice-weekly visits a regular occurrence.