Jamie Lynn Spears has celebrated her 17th birthday in a low-key dinner with baby daddy Casey Aldridge.
The pregnant Nickelodeon star had spent her birthday Friday at Ruby Tuesday with just her 18-year-old fiancé. The couple then shopped at Wal-Mart after dinner.
A source tells People magazine, "They both seemed really happy, both in really good moods. Jamie Lynn had a big smile on her face.
"It was just the two of them. They were like a little adult couple, very low-key."
Meanwhile, big sister Britney and the rest of their family, mom and dad Lynne and Jamie, and brother Bryan, had gathered for a family dinner in Los Angeles. They joined a group of about ten persons at Ristorante Peppone for an Italian dinner.
A restaurant insider says, 'She [Britney] was in a great mood, and had dinner with her family and friends."
