No word yet on the age or name of the tot, who will join 13-year-old Jack Henry, Ryan’s son with her ex-husband, actor Dennis Quaid, 51.
"It is a personal family situation that she does not feel inclined to share," says Ryan's rep.
Says David Ptasnik, cofounder of the Seattle-based agency Americans Adopting Orphans, which has helped more than 600 families adopt, primarily from China: "I think it's great. It lets people know that international adoptions are possible and that it's culturally acceptable. It's going to help a lot of kids."
The actress will also continue to be a working mother: She is developing a Sylvia Plath biopic, has been publishing her photographs in magazines and, after a two-year absence, will return to the big screen later this year in the romantic comedy In the Land of Women.