"Brothers & Sisters" star Rachel Griffiths will soon provide a little brother or sister to her family. The 40-year-old actress and her Andrew Taylor are expecting their third child, reports People. The couple already have two children: Banjo Patrick, 5, and Adelaide Rose, 3. The Australian-born actress has been married to her countryman, an artist, since New Year's Eve 2002. On "Brothers & Sisters," Griffiths plays Sarah Walker, the eldest sibling of her family who also has two children of her own.