Jamie Lynn Spears is officially a mom!

OK! has exclusively confirmed that the 17-year-old star gave birth to daughter Maddie Briann Aldridge at 9:33am in a hospital near her new home in Liberty, Miss.. The adorable baby girl weighed in 7 lbs, 11 oz.

"Both mom and baby are healthy and happy," a rep for Jamie Lynn tells OK! exclusively. "They are surrounded by their close relatives, including Jamie Lynn’s older sister Britney, mother Lynne, father Jamie and brother Bryan."

Maddie is the first child for the former Zoey 101 star and her fiancé, Casey Aldridge. Not to mention, she makes an aunt and cousins out of Britney Spears and her sons Sean Preston, 2, and Jayden James, 1.

As OK! has reported, Aunt Britney, along with her father Jamie and brother Bryan, flew into Kentwood on Wednesday to be present for the birth.

The birth culminates a very public pregnancy for the teen, who exclusively announced she was expecting in the pages of OK! in December.

"I can’t say it was something I was planning to do right now," she confessed to OK!. "But now that it’s in my lap and that it’s something I have to deal with, I’m looking forward to being the best mom I can be."

Retreating to her hometown of Kentwood, Jamie Lynn laid low for the rest of her pregnancy, preparing for her summer arrival and getting engaged to Casey, 19. The two recently purchased their first home in Liberty, where they plan on raising Maddie.

In May, she hosted an intimate baby shower that reunited her with Britney, 26, for the first time since October. Big sis even gave the expectant mom some motherly words of wisdom.

"She told me, ‘There are going to be some long nights, but it is completely worth it,’" Jamie Lynn said.

Now that her daughter has arrived, the actress wants to devote all her time and attention to her bundle of joy. Everything else — including a wedding and her career — can wait.

"Right now, I am so focused on the baby," she told OK!. "You never know what may happen a year from now. There is the possibility I’ll go back, but right now, I just want to be a good mom."

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