It's official: Lisa Marie Presley is expecting twins!

A week after Us Weekly broke the news, her mom Priscilla has confirmed it to Entertainment Tonight.

"She wanted it really to be kept a secret for a long time, you know, and I think women should, because they should be able to announce what they're having and when it's time to make the announcement," Priscilla tells ET.

Turns out, Lisa Marie's dad, Elvis, was a twin, and her mother, Priscilla, has younger brothers who are twins.

See photos of other stars with twins.

A source tells Us the singer, 40, and her husband, rocker Michael Lockwood, 47, will greet their babies in the fall.

A source close to Presley tells Us, "She's never been so happy!"

Lisa Marie — who wed Lockwood in 2006 — has two children from a previous marriage to Danny Keough.

[source]