Britney Spears will have another baby in her life, and it will make her an auntie. Jamie Lynn Spears, Britney´s 16-year-old sister, is pregnant. The star of Nickelodeon´s Zoey 101 show confirmed the news to a celebrity magazine which hits stands Friday.

“It was a shock for both of us, so unexpected,” she said. “I was in complete and total shock and so was he.”

The father is Spears boyfriend, Casey Aldridge, a 19-year old actor with whom she lived during the summer. Spears is 12 weeks pregnant and learned of the pregnancy from an at-home test and a subsequent doctor visit.

The teen star told the magazine that she kept the news to herself to, "work out what I would do for myself before I let anyone’s opinion affect my decision." After taking two weeks to herself and thinking over her decision, Spears told her mother, Lynne, before Thanksgiving.

Spears says that at first her family was "very upset," but that after digesting the news they became supportive. Spears and Aldridge began dating in high school and had reportedly known each other for years. The mother-to-be plans to raise the baby in her home state of Louisiana, “so it can have a normal family life.”

The news of the pregnancy came as a shock to show producers and family members alike, specially since Spears is seemingly a tame celebrity. Nickelodeon released a statement saying they respected the star’s decision to take responsibility for her situation, claiming their primary concern is that of Spears’ well being.

Zoey 101 will conclude its third season this January. The show will end with a dilemma where Zoey (Spears) must decide to leave Pacific Coast Academy or move to London with her parents. Producers said filming for the fourth season had already been completed.

Now in the shoes of her older sister, Spears has had to realize that every action has a consequence. When asked about premarital sex she says teens are better off waiting.

“I definitely don’t think it’s something you should do; it’s better to wait,” she told the magazine. “But I can’t be judgmental because it’s a position I put myself in.”