"Baby crazy" Nicole Kidman wants to have another child and says she hopes "every month" to fall pregnant.

The Oscar winner has two daughters with her husband and country singer partner Keith Urban, as well as two adopted kids with her ex-husband Tom Cruise.

"I'm baby crazy. I just love kids... I hope every month that I'm pregnant... But I never am. I would be jumping for joy if I was... It won't happen," usmagazine.com quoted her as saying.

"No, I'm 47. It won't happen... Well my grandmother had her last baby at 49 so you never know,` she said.