Bridesmaids star Chris O'dowd is a first-time dad.

The actor/comedian's TV host wife Dawn O’Porter gave birth to a baby boy on 25 January (15), her publicist has confirmed.

O'Dowd waited a week to share the news with fans, taking to Twitter on Sunday (01Feb15) and writing, "It’s a boy! (Dawn) & I would like to introduce Art, our gorgeous baby. Well, I’m pretty sure he’s ours."

He also posted a mash-up photo of a baby sporting his beard and his wife’s haircut.

O’Porter adds, "Thanks all. He is one week old today. It’s been a beautiful week. I think we’ll definitely keep him."