Chris O’Dowd and Dawn O’Porter Welcome Son Art

02/01/2015 at 03:15 PM ET

Chris O'Dowd Dawn O'Porter Welcome Son Art
Splash News

Chris O’Dowd is officially part of the dad crowd.

The actor welcomed his first child, a boy, with his wife, writer and TV host Dawn O’Porter, on Sunday, Jan. 25, her rep confirms to PEOPLE.

“It’s a boy! [Dawn] & I would like to introduce Art, our gorgeous baby. Well, I’m pretty sure he’s ours,” O’Dowd joked via Twitter, sharing a mashup photo of a baby sporting his beard and his wife’s haircut.

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

O’Dowd, 35 — who wed O’Porter, 36, in August 2012 — announced his wife’s pregnancy while participating in the ALS Ice Bucket Challenge in August. After being showered with the cold splash, the dad-to-be nominated his unborn baby — a challenge completed when O’Porter poured water on her belly.

Known for his roles in Bridesmaids and on The IT Crowd, O’Dowd is currently appearing in St. Vincent and will next star in Icon, scheduled for release in August. His first children’s book, Moone Boy: The Blunder Years, based on the TV series, will be released in the U.S. in May.

— Anya Leon with reporting by Sarah Michaud

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Marky on

Is the baby’s name Art O’Porter O’Dowd? That is a real mouthful! Congratulations to the happy couple!

Lilah on

Absolutely adore Chris O’Dowd!

Juli on

LOL at the picture dad tweeted. Congratulations to Chris and Dawn. Can I say how much I love that they named their son Art? It’s short, sweet and it has a beautiful meaning.

Nicole on

So happy for them. Chris O’Dowd is an awesome actor and I’m sure he’s an even better father 🙂

Kathy on

Aww, adorable picture!

Anonymous on

Congrats to them, and I love the name!

jessiemaystorm on

@Marky O’Porter is Dawn’s married name (O’ from Chris added to her maiden name of Porter) so I’m assuming that for the same reasons the baby’s full name is Art O’Porter. Congrats to Chris and Dawn, and welcome Art!