Olivia Wilde and her fiance, former 'Saturday Night Live" castmember Jason Sudeikis, are the proud parents of a baby boy!

Otis Alexander Sudeikis was born Wednesday, reports USA Today.

"Ladies and gentlemen, Otis Alexander Sudeikis has LEFT the building! (I'm the building)," tweeted Wilde, who also included a black-and-white photo of the back of Otis's head cuddled next to his mom's face.

This is the first child for both Wilde and Sudeikis.