Nicole Kidman Theo Wargo/Getty Images Nicole Kidman's greatest role isn't on the big or small screen. Instead, it's being the best mom possible to her four children. "I just always wanted a child," Nicole, 56, told Vogue Australia in December 2017. "I think from a very early age, I wanted a child. I knew that I was going to have a child and that it didn't matter [how], I actually didn't know if I was ever going to give birth to a child. So that was the least of it for me. And what I did first was adopt.