Nicole Kidman is opening up a about the latest addition to her family. The proud mom of four interviews with Australia's 60 Minutes, sharing intimated details about her "roller coaster ride with fertility" and a picture of new baby Faith, who she welcomed with husband Keith Urban on Dec. 28 via a gestational carrier.

"We were in a place of desperately wanting another child," Nicole told the show of their choice of a surrogate. "This opportunity arose for us, and I couldn't get pregnant."

OK! NEWS: NICOLE KIDMAN & KEITH URBAN ON NEW DAUGHTER FAITH — “WE’VE GOT OUR HANDS FULL!”

The Oscar winning actress showed a picture of baby Faith snuggled close to her older daughter Sunday Rose.

"Children are children — you'll die for your children," she said. "And when you feel that as parent - that's the unconditional love."

OK! NEWS: NICOLE KIDMAN & KEITH URBAN WELCOME DAUGHTER

Catch the clip below.