March 21, 2013 03:00 PM

Gregg DeGuire/WireImage

Another lovely lady for Harold Perrineau!

The actor and wife Brittany, 37, welcomed their third child, daughter Holiday Grace Perrineau, on Thursday, March 21, the couple tell PEOPLE exclusively.

Weighing in at 7 lbs., 5 oz. and measuring 21 inches long, Holiday arrived at 2:54 a.m. She joins elder siblings Wynter Aria, 4½, and Aurora, 18, at home.

Despite a sleepless night, the proud new dad says he and the family are ecstatic.

“Holiday Grace is here, and we couldn’t be any happier,” Perrineau, 49, tells PEOPLE.

“Our family feels complete. Mommy and baby are doing well and big sisters Aurora and Wynter are [thrilled].”

Perrineau shot to fame with roles on TV’s Oz and Lost. More recently the New York native had a pivotal role last season in the FX drama Sons of Anarchy and appeared in the Oscar-nominated film Zero Dark Thirty.

— Monica Rizzo

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