Olivia Wilde and Jason Sudeikis welcomed their baby boy this week and quickly showed him off to the world via Twitter on Wednesday.

"Ladies and gentlemen, Otis Alexander Sudeikis has LEFT the building! (I'm the building)," Wilde tweeted to her 1.3 million followers.

The black-and-white snapshot shows the 30-year-old actress smiling while holding the newborn's head against her cheek.

This is the first child for Wilde and Sudeikis, 38, who got engaged in January 2013, nine months before they announced that they were expecting. The Hollywood stars have been a couple since November 2011 and now live together in Manhattan.

When Wilde covered Marie Claire in April 2013 she spoke about her desire to have children and also praised her beau.

"We've discussed all our ideals and hopes. I can't wait for children. I'm open-minded about how many, but three, which I love, is like a little party. I am not trying to have kids now - there's no strict plan for anything in my life. What happens, happens. He's so good with kids," she told the magazine. "I've never before experienced looking at someone and thinking, That's who I want to raise a child with."

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Olivia Wilde, Jason Sudeikis