BRITNEY SPEARS's sister JAMIE LYNN is pregnant with her second child, according to US reports.
The shocking news comes less than four months after the 17-year-old gave birth to her first child Maddie Briann - after falling pregnant at just 16.
Reports say the teenager's mother LYNNE is furious and the family are desperately trying to keep the shocking news a secret.
A source told the National Enquirer: 'Jamie Lynn is about eight weeks pregnant, and she and her mom Lynne are hysterical.
'Neither of them knows what to do, but for now they're trying to keep the news from getting out.
'Jamie Lynn believed she couldn't get pregnant while she was breast-feeding.
'But a home pregnancy test came back positive and Jamie Lynn cried her eyes out.
'Lynne was livid when she found out. She told Jamie Lynn that she thought she was smarter than that and she couldn't believe that she hadn't learned her lesson.'
According to reports Jamie Lynn has still not told fiancé Casey Aldridge, 19, about the second pregnancy.
The news comes just weeks after claims Casey had cheated on her with Kelli Dawson.
Jamie Lynn has denied Dawson's claims, saying: "That is just completely fabricated. He never had an intimate relationship with her, so how would that be possible? Around here, that particular girl is known to make up stories.
'It hurt me to hear those things because my family has to read it. It's not fair to them.'
If the pregnancy is true, Jamie Lynn is following in the footsteps of big sis Britney who gave birth to her second son Jayden James just 12 months after having her first son Sean Preston.