Tom Cruise's ex Nicole Kidman would support her adopted children if they seek their birth mother

"That's part of my belief on adoption," the actress said about supporting her children.

Nicole Kidman plays an adoptive mother both in real life as well as in her upcoming movie Lions, which revolves around the emotional story of Saroo Brierley. Considering she has first-hand experience – she adopted Connor and Isabelle from her previous marriage to Tom Cruise – the actress revealed how she would respond if her children ever wanted to find their biological parents.

Sharing her point of view, Kidman assured that she would be supportive if her two children try and seek their birth mother.

"Yeah, of course," the Australian actress said adding, "That's part of my belief on adoption. If a child wants to find their birth mother, I'm absolutely supportive of that."

The Batman Forever actress tied the knot Cruise in 1990 and after over a decade of togetherness, the pair called it quits on their relationship in 2001. Following their split, the Oscar-winning actress reportedly had shared custody of her adopted children until Connor and Isabelle decided to live with the Jack Reacher actor.

Dishing on her special role in the movie and why it was important to her, the 49-year-old actress earlier said, "I can see now, for Lion, that it was important to me because I'm a mother with adopted children."

"This movie is a love letter to my children," she added.

After splitting from the Mission Impossible actor, Kidman married country-crooner Keith Urban in 2006 and the couple also shares two daughters – 8-year-old Sunday and 5-year-old Faith. As the happy couple prepare for celebrations in the coming year – both turn 50 within the next year – they dished on their big plans for daughter Fifi's (Faith) birthday.

"[Right now] we're thinking about Fifi's birthday (December 28th). She's the next birthday on our list," she added.