Bryce Dallas Howard

Bryce Dallas Howard and husband Seth Gabel welcomed their second child, her father, director Ron Howard, tweeted Sunday.

Check out photos of Bryce Dallas Howard

Beatrice Jean Howard-Gabel was born Thursday, weighing in at 8 pounds, 6 ounces. Beatrice joins older brother, Theo, 4. "Bryce and baby B are spectacular," Ron wrote late Saturday, adding, "daddy Seth & brother Theo are beaming ear to ear".

Bryce, 30, wed fellow actor Gabel (Fringe) in June 2006 after dating for more than five years. She most recently starred in 50/50 and The Help, which won Best Ensemble from the National Board of Review and is nominated for Best Ensemble Cast at the upcoming Screen Actors Guild Awards.