Jamie Lynn Spears Birthday April 4, 1991 age 17 wew, As brought by the hollywood celebrity news room, Jamie Lynn Spears got herself pregnant at 16 years old of age wew. The gossips the father is guy named Casey Aldridge, which is her boyfriend. For almost two seasons, Jamie Lynn Spears was a cast member on the Nickelodeon comedy-variety show: All That, and Jamie Lynn Spears had to play many different characters, including her original character Thelma Stump. Jamie Lynn Spears also did many On-Air Dares (a Nickelodeon version of Fear Factor) skits where she and other All That cast members had to do many “disgusting acts.” Jamie Lynn Spears eventually left All That to star in Zoey 101.