Corey Stoll and his pregnant fiancee Nadia Bowers attended the Tonys on June 7. Credit: Kevin Mazur/Getty Images

Ant-Man star Corey Stoll will be welcoming a tiny new addition this year, and no, it's not Paul Rudd. The actor, 39, and his fiancee Nadia Bowers walked the red carpet at the 2015 Tony Awards on Sunday, June 7, and sources close to the couple confirmed to Us Weekly that they are expecting their first child. 

The pair got engaged in September 2014, and the cat was out of the bag when Bowers, 41, attended the Toronto International Film Festival wearing a giant diamond sparkler. 

It's set to be a big year for the Homeland alum, who will be playing the lead villain Darren Cross (aka Yellowjacket) in the new Marvel installment, Ant-Man. He also has a role in the film Dark Places, the latest from Gone Girl author Gillian Flynn, which hits theaters in August, and appears opposite Billy Crudup in the upcoming movie Glass Chin

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