Eric Ladin and his wife have even more to celebrate this holiday season: they're officially parents!

The Killing star's spouse Katy gave birth to a son, Maxfield David, on Friday, Dec. 21, the proud papa, 34, announced on Twitter Saturday.

PHOTOS: Hollywood's hottest new star dads

"Wow! The last 24 hours have been the best of my life. Forever changed, I am now a father [to] Maxfield David Ladin," the actor wrote, sharing a precious portrait of his first child with the stylist and fashion designer.

Best known for his role on AMC's The Killing, the new dad has also appeared on Law & Order: Special Victims Unit, as well as Suits and Justified.

PHOTOS: Most buzzed-about celebrity pregnancies

Tell Us: Do you like the name Maxfield David?

This article originally appeared on The Killing's Eric Ladin Welcomes Son Maxfield David: See a Pic of His Adorable Baby Boy!