She and daddy-to-be Ashton Kutcher are keeping everything close to the chest.
"She is so private she probably won't ever talk about it—at least not publicly," a source tells me. "She and Ashton don't want to share this with the world. They've been like that for their entire relationship. Ashton knows what it's like having a very public relationship and doesn't want it again."
Another source says that the two just recently started sharing their baby news with family and friends. "They kept it a secret as long as they could," the source said. "But obviously, she's been started to show so it was just a matter of time in recent days."
E! News exclusively reported yesterday that the spouses-to-be are expecting their first child. This comes about a month after we also revealed that the former That '70s Show co-stars are engaged to be married.
Kunis recently shot a guest gig on Kutcher's CBS comedy Two and a Half Men. She will next be seen on the big screen in May opposite Peter Dinklage and Robin Williams in The Angriest Man in Brooklyn followed by the July release of Jupiter Ascending, a big budget sci-fi action flick costarring Channing Tatum and directed by siblings Andy Wachowski and Lana Wachowski.
Can't wait to see her baby bump on the red carpet!
In other baby news, Stacey Keibler's pregnant, too. Get the scoop in the video below.