Showbiz
Rex Features
It was reported earlier today that the 17-year-old was admitted to hospital in Mississippi at around 4am.
She is believed to have had her labour induced after some minor problems and gave birth at 9.30am.
Britney Spears arrived at the hospital this morning after flying to the family's home in neighbouring state Louisiana with dad Jamie and brother Bryan yesterday.
A source told People: "Just the family was there. Everyone is healthy and happy."
The baby is the first child for Jamie Lynn and fiancé Casey Aldridge.
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