Harold Perrineau, Wife Brittany Welcome Third Daughter, Holiday Grace

Actor Harold Perrineau and wife Brittany arrive at the Los Angeles premiere of "Zero Dark Thirty" at the Dolby Theatre on December 10, 2012 in Hollywood, California.  Gregg DeGuire/WireImage.com

Behind every good man is a great woman — or, in Harold Perrineau's case, a great woman and three great girls. The Lost star and his wife, Brittany, welcomed their third child, a daughter, on Thursday, March 21, the actor's rep confirmed to Us Weekly.

Holiday Grace Perrineau was born at 2:54 a.m. She weighed in at 7 pounds, 5 ounces, and measured 21 inches long at the time of her birth, the rep tells Us.

This is the third child — and the third girl — for Perrineau, 49, and Brittany, 37. The couple are already parents to daughters Aurora, 18, and Wynter Aria, 4.

Perrineau rose to fame playing Augustus Hill on the HBO drama Oz and, later, as Michael Dawson on Lost. More recently, he appeared in the Oscar-nominated film Zero Dark Thirty and on season five of the FX series Sons of Anarchy. His wife is a former model who had a small role as a love interest for Sawyer (Josh Holloway) on Lost.

Sign up now for the Us Weekly newsletter to get breaking celebrity news, hot pics and more delivered straight to your inbox!

Want stories like these delivered straight to your phone? Download the Us Weekly iPhone app now!