The 48-year-old actress is already a proud mother to daughters Faith, five, and Sunday, seven, whom she has with Urban, reported Femalefirst.
The beauty, who also has two grown-up adopted children from her relationship with ex-spouse Tom Cruise, said: "I'm done with babies. But it's a great time for us as a family because we've got these two glorious children who are five and seven and such a joy to be around!"
Meanwhile, Kidman and Urban, 48, will hit their tenth wedding anniversary this year and believe the success to their lengthy marriage is their roaring chemistry and commitment.