(CNN) -- Olivia Wilde and Jason Sudeikis are growing their family.
The couple, who announced their engagement in January, are expecting their first child together, a rep for Wilde confirmed to CNN.
The 29-year-old actress hinted this year that she and Sudeikis, 38, were open to having children, although there wasn't a firm plan in place.
"We've discussed all our ideals and hopes. I can't wait for children," the "Rush" star told Marie Claire in March. "I'm open-minded about how many, but three, which I love, is like a little party. ... (T)here's no strict plan for anything in my life. What happens, happens."
But even then Wilde said she knew her husband-to-be would make a great dad. "He's so good with kids," she told the magazine of the former "Saturday Night Live" entertainer. "I've never before experienced looking at someone and thinking, 'That's who I want to raise a child with.' "
On Twitter, Wilde has been inundated with congratulations since Sunday's announcement.
"WOW. You guys are awesome. So kind," she tweeted. "Thank you thank you thank you! PS. Babies eat mostly salsa right?"
CNN's Douglas Hyde contributed to this report.