Jamie Lynn Spears

Jamie Lynn Spears

"Zoey 101" star Jamie Lynn Spears has graduated to motherhood.

The younger sister of Britney Spears and fiancee Casey Aldridge welcomed a baby girl Thursday morning, June 19, reports People.

Little Maddie Briann was born in a Mississippi hospital near Spears' Louisiana hometown of Kentwood.

Mom Lynne, Britney and her brother Bryan were on hand to help out.

The youngest Spears, 17, and Aldridge, 19, have been engaged since March. They've bought a three-bedroom home in Liberty, Miss., where Aldridge attended high school.