George Clooney saw this one coming. Marveling to PEOPLE last November about Matt Damon's parenting skills, Clooney predicted that his Ocean's Thirteen costar and wife Luciana would be adding to their brood, just like fellow castmate Brad Pitt. "Brad's got a baseball team," Clooney told PEOPLE. "I wouldn't be surprised to see Matt having more because he seems very taken with it. It's great."

And now it's official: Matt, 37, and Luciana, 32, announced March 9 that they are expecting another baby. "They couldn't be happier," says Matt's rep. "They're so excited!" The new addition will join daughter Isabella, who turns 2 in June, and 9-year-old Alexia, Luciana's daughter from a previous marriage. The day they shared their happy news, a playful Matt and Luciana showed off Mom's new baby bump at Empire magazine's annual awards in London, where he told reporters that family comes first. "Now I have to plan everything around school and summer vacations," said the star, who is currently filming the CIA thriller Green Zone in Morocco. But he wouldn't have things any other way. Says Clooney: "He absolutely adores those kids."

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