The Big Little Lies star, who was married to Cruise from 1990 to 2001, got candid about her personal life in the July issues of Tatler magazine.
"I know the yearning. That yearning. It's a huge, aching yearning. And the loss! The loss of a miscarriage is not talked about enough. That's massive grief to certain women. There's an enormous amount of pain and an enormous amount of joy on the other side of it," Kidman says. "The flipside of going through so much yearning and pain to get there is the feeling of 'Ahhhh!' when you have the child."
Kidman and Cruise adopted two children whilst they were married, Connor Cruise and Isabella Cruise.
She has since welcomed two daughters with husband Keith Urban.