George Clooney's mom spills the beans on sex of twins

Feb. 17 (UPI) -- George Clooney's mom spilled the beans on the sexes of the actor's unborn twins last week.

The 55-year-old actor's mother, Nina Clooney, said Clooney's wife, Amal Clooney, is pregnant with a boy and a girl, according to an interview with Vogue published Thursday.

"It will be one of each! Yes, a boy and a girl. That's what I've been told," Nina told the magazine. "How marvelous! My husband and I are extremely excited."

The Talk host Julie Chen had announced last week that George and Amal are expecting twins in June, although the couple have yet to publicly comment on the pregnancy. Sources told People the pair did share the happy news with their families.

"[Amal] has let everyone in both families know quietly," an insider said. "They're all very happy."

Clooney's friend and frequent co-star Matt Damon confirmed Wednesday that the actor and Amal are expecting. He told E! News he didn't expect Clooney to ever have children until the star met Amal.

"After he met Amal, yes [I thought he would have kids]. I wasn't surprised when he told me. I'm extremely happy for him and for them," the 46-year-old actor said.

"Once he met her, I had a feeling that was in the cards," he added. 'It wasn't a question for many years -- it was a total nonstarter [if he would start a family]. One he met her, everything changed."

George and Amal married in Venice, Italy, in 2014 after more than a year-long engagement. The dad-to-be will direct Damon in the new movie Suburbicon, and will appear with the actor in Ocean's Eight.