Britney Spears' teenage sister JAMIE LYNN welcomed daughter MADDIE BRIANN into the world on Thursday (19Jun08).
The 17-year-old gave birth via Caesarean section at Mississippi Southwest Regional Medical Center in MCComb, Mississippi. The baby girl weighed seven pounds, 11 ounces (3.5 kilograms).
A source tells U.S. magazine People, "Just the family was there" at the time of the 9:30am birth, adding big sister Britney's presence "made a big difference".
Maddie Briann is the first child for Spears and her 19-year-old fiance Casey Aldridge, a pipe layer.
The pair was engaged in March (08). The teen star stunned the Spears family when she announced her pregnancy news last year (07), at the age of 16. They had reportedly been delaying their wedding until after the birth of their child.