The actors welcomed son Otis Alexander, Wilde announced via Twitter Wednesday evening.
“Ladies and gentlemen, Otis Alexander Sudeikis has LEFT the building! (I’m the building),” she wrote, sharing a photo of herself cuddling her newborn.
Wilde, 30, embraced her growing curves, dressing it up on the red carpet at awards shows and posting playful pics of her bump on Instagram. “Sure I’ve looked like this after Mexican food, but this time it’s a BABY,” she joked in March.
The Her star and Saturday Night Live alum, 38, who got engaged in January 2013, announced that they were expecting last October. Wilde later revealed that they were having a boy.
“They are incredibly happy,” a source close to the pair told PEOPLE last year. “They’re very excited to welcome a new member into their family.”
– K.C. Blumm