Olivia Wilde Is Pregnant & Her Cute Announcement Features Soon-To-Be Big Brother Otis — PHOTO

And baby makes four. That's right, Olivia Wilde is pregnant with her second child with fiancé Jason Sudeikis. The Vinyl actor announced the news via Instagram Monday with an adorable photo featuring her baby bump alongside her one-year-old son Otis Sudeikis. The caption reads, "Matching baby bumps," and the photo shows Wilde and Otis are smiling at each other and holding their bellies. This is has to be the cutest pregnancy announcement ever.

As previously stated, this will be Wilde and Sudeikis' second child. In April 2014, they welcomed Otis. Since that moment, The O.C. alum has shared some of the sweetest pictures of her child. Really, they've become an Internet hit. I can only imagine the same will happen once she becomes a mom for the second time around.

It's clear that Wilde knows how to make an announcement. When she revealed Otis and his name to the world, she took to Twitter and wrote, "Ladies and gentlemen, Otis Alexander Sudeikis has LEFT the building! (I'm the building)." I mean, how hilarious is that? The caption also accompanied a black and white image of Wilde holding her son.

Her pregnancy comes at an appropriate time. While chatting with E! News in April at the Tribeca Film Festival, Sudeikis said, "I'm all for it," about having another child with Wilde. Seeing as he gave that response three days before his fiancée revealed to the world their exciting news, it's clear that the former Saturday Night Live star knew it was actually going to happen sooner rather than later.

With that, congrats to their happy family on the exciting news!