Jamie Lynn Spears hits the shops with baby daughter Maddie Briann amid rumours fiance Casey Aldridge cheated on her while pregnant.

Although her engagement ring was still very prominent, the teen star looked cagey as she cradled the two-month tot after purchasing a new mobile phone.

Perhaps the purchase was a tracking device for Casey?

His ex girlfriend Kelli Dawson rocked the Spears family this week after telling a US tabloid she enjoyed an affair with the 19-year-old while Jamie Lynn was six months pregnant.

And her story was supported by Jamie Lynn’s sister Britney’s first husband Jason Alexander, who revealed that the fling was common knowledge in their hometown.

Casey - who is due to wed Jamie Lynn later this year - has denied the allegations.

It seems that a lot of people want Britney Spears out of their life. Younger sister Jamie Lynn Spears was not paid for giving an interview with OK! magazine regarding her pregnancy. Her and mom’s only requirement was that Britney was kept out of the picture.

The details are a little sketchy but it all stems from when Britney had a melt down on an OK! photo shoot. Lynne Spears called the mag to thank them for handling the situation well and kept in contact. I guess the mother and daughter trusted the mag that Jamie Lynn’s story will be done in a sympathetic way. And that means, no mention of just how bad the mental genes are in the family. *cough*Britney*cough*