Nicole Kidman and her sister employs to converse in a secret words. The Oscar-winning actress Nicole Kidman is extremely close to sibling Antonia and spoke in a concealed tongue when they were growing up.
Nicole Kidman - who is godmother of two children of Antonia - said: "We used to have a secret language and all sorts of stuff. No one will ever come between us. We need that love and support from each other, and we're both willing to give it. She's grown up all her life with a sister who's an actress, and she's been a part of it and held me in her arms when I've cried. She's seen the failures and the successes, and I've seen hers."
When Nicole Kidman broke up with her first husband Tom Cruise in February 2001, she get Antonia to accompanied her in the premiere night of the movie entitled “The Others” – at the same time her first open appearance ever since their break up was announced - for moral support.
The “Cold Mountain” star, which is now married to musician Keith Urban, claims she and Antonia will forever offer each one’s other support, no matter where their life take them.
Nicole Kidman added: “We will always be there for each other, no matter what happens.”
