• BREAKING NEWS ABC shows live and on-demand -- Download the WATCH ABC app!

OTRC: Olivia Wilde, Jason Sudeikis welcome first baby, Otis (Photo)

Olivia Wilde shared this photo of her and Jason Sudeikis' newborn son, Otis, on her Twitter page on April 23, 2014. The baby was born three days earlier. Wilde and Sudeikis have been engaged since January 2013. This is their first child. / Olivia Wilde and Jason Sudeikis appear at the 2014 Oscars in Hollywood, California on March 2, 2014. (pic.twitter.com/uHfY3adroc / twitter.com/oliviawilde/status/459114896056401920 / Lionel Hahn / AbacaUSA / Startraksphoto.com)

Olivia Wilde and fiance Jason Sudeikis have welcomed their first child!

The 30-year-old "House" alum and "Tron: Legacy" actress shared a photo of the couple's newborn baby boy on her Twitter page on Wednesday, April 23 (see above).

"Ladies and gentlemen, Otis Alexander Sudeikis has LEFT the building! (I'm the building)," she said.

Wilde's spokesperson told OTRC.com that the actress gave birth on Sunday, April 20.

UPDATE: Wilde also joked on Twitter on Thursday: "Having an infant son alerts me to the fact that every man, at one point, has peed on his own face. #awesome"

Wilde and Sudeikis, 38, met on the set of "Saturday Night Live" in 2011. The actor was a cast member on the seriesfor 10 years, until 2013. They announced their engagement in January of that year and revealed the actress' pregnancy the following October.

Wilde had often appeared in public sporting her baby bump, such as at the 2014 Oscars in March. Check out a video of her walking the red carpet with Sudeikis below.

(Copyright ©2018 OnTheRedCarpet.com. All Rights Reserved.)