Jamie Lynn Spears Spends B-Day Shopping at Wal-Mart

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Jamie Lynn Spears celebrated her 17th birthday with fiancé Casey Aldridge shopping at Wal-Mart and having dinner at Ruby Tuesday, People says.

Really. Which is great. In fact, we support whatever makes America's favorite unwed teen mom-to-be and teen baby-daddy happy.

Pregnant Jamie Lynn Spears Picture

"They both seemed really happy, both in really good moods," a source tells People of the couple's outing near Aldridge's home in Liberty, Miss.

"Jamie Lynn had a big smile on her face."

With Wal-Mart purchases in hand, Spears, who is pregnant with Aldridge's child, took in a quiet dinner with Casey, 18, at the restaurant.

"It was just the two of them," says the source.

"They were like a little adult couple, very low-key."

Jamie Lynn Spears recently has been flashing a big engagement ring from Casey Aldridge. They are expecting their baby this summer.

Meanwhile in Los Angeles, Jamie Lynn's big sis Britney Spears gathered with the rest of the Spears clan for a family dinner in Los Angeles.

Britney, parents Lynne and Jamie and brother Bryan Spears joined a group of about 10 people for an Italian feast at Ristorante Peppone in Brentwood.

"[Britney Spears] was in a great mood, and had dinner with her family and friends," a restaurant source says.

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Jamie Lynn Spears Biography

Jamie Lynn Spears: Pregnant?
Ding dang it y'all! Jamie Lynn Spears went and got cute little ass pregnant at a mere 16 years of age. The father is some guy named Casey... More »
McComb, Mississippi
Full Name
Jamie Lynn Marie Spears

Jamie Lynn Spears Quotes

More than anything, I just want this baby to have a normal life.

Jamie Lynn Spears

I had a perfect pregnancy and a perfect delivery. I was very blessed.

Jamie Lynn Spears