The mother of Britney and Jamie Lynn Spears says Jamie Lynn told her she was pregnant in a note.

Lynne Spears said on NBC's "Today" show Wednesday that Jamie Lynn — 16 years old at the time — handed her the note and told her to go into the bedroom and read it.

The note said she was pregnant but "everything was gonna be OK, mom" and that she and boyfriend Casey Aldridge were going to raise the baby.

"I thought it was a joke," Spears said in an interview. "I kept waiting for the punch line."

Spears said she realized it wasn't a joke because Aldridge, a pipe-layer from Liberty, Miss., wouldn't look at her.