Rachel Griffiths Rachel Griffiths

Rachel Griffiths' kids now have a little sister: The Brothers & Sisters star has given birth to her third child, a baby girl, People reports.

No other details were immediately released.

Griffiths and her husband, Andrew Taylor, are already parents to son Banjo, 5, and daughter Adelaide, who turns 4 on Tuesday. Griffiths' pregnancy was not written into her Brothers & Sisters' storyline.