Sebastian Stan and his girlfriend Annabelle Wallis are expecting!! Per TMZ, the couple have been together for four years and are going to be welcoming a baby soon. It's not clear when the baby is due, or what the gender is - but how exciting! Related: Brody Jenner & Tia Blanco Are Expecting Baby No. 2! This is going to be a busy year with both actors having lots of things lined up, including Seb's much-anticipated Avengers: Doomsday and Fjord. Annabelle has been working with Jason Statham for an April release, and she's also gearing up to work on a new Netflix project about the Unabomber.