The couple announced Monday the arrival of Faith Margaret Kidman Urban, born on Dec. 28 at a Nashville, Tenn., hospital.
Kidman and Urban released a statement saying they are "truly blessed" and thanked everyone for their support, "our gestational carrier" in particular.
The couple also has a 2-year-old daughter, Sunday Rose. Kidman credited her first daughter's unexpected appearance to swimming in the waters of a small Australian Outback town during the filming of "Australia." She and six other women became pregnant after swimming in Kununurra.
No other details about Faith Margaret were available.