Actress Bryce Dallas Howard is a mom again after giving birth to a baby girl.

The Help star and her husband Seth Gabel became proud parents to little Beatrice, a sister for their four-year-old son Theo, on Thursday.

The baby news was announced by the actress' director father Ron Howard in a post on his Twitter.com page on Saturday.

He writes, "Beatrice Jean Howard-Gabel Born Jan 19 2012 8lbs 6oz Bryce & Baby B are spectacular. Daddy Seth & brother Theo are beaming ear to ear."

Howard later added, "Beatrice's arrival is hugely exciting for our family. Thanks for all the kind tweets folks."