This isn’t the first time Haddock — who wed Claflin in 2013 — has used an event to announce a pregnancy. In 2015, the actress stepped out with her husband for the London premiere of The Hunger Games: Mockingjay Part 2, where she showed off her baby bump in a fitted dress.

“I always thought, naïvely, that I knew what it would be like. I always thought that I’d understand,” Claflin told PEOPLE of fatherhood shortly after his son’s birth. “[But when he was] born, it’s like another level of love that you’ve never experienced before — [that] you can’t describe to someone unless [they’re] in it.”

He added, “Of course it’s hard, [but] it’s all worth it. The rewards are just endless. He’s literally the best thing that’s ever happened to me.”