Jamie Lynn Spears is sporting some sparkling new jewelry – an engagement ring from fiancé Casey Aldridge.
Spears, 16, has been flashing the rock to friends and family around Louisiana and Mississippi, a source close to the family tells PEOPLE.
"She's got an engagement ring," the source says. "She's been showing it off, talking about it."
Spears and her 18-year-old fiancé
are expecting the baby this summer. No official word yet on a wedding date for the couple.
PHOTO GALLERY: Growing Up SpearsLike this story? Click on the Yahoo Buzz! button below to Buzz it up!