Nicole Kidman has made a rare admission about her homelife with husband Keith Urban.MORE: Nicole Kidman and Keith Urban's vast $4.5million farm is a world of its ownThe award-winning actress shared that her recent role as Lucille Ball would not have been possible without the support of country star Keith.WATCH: Nicole Kidman wows with incredible transformation for new role"He's just very supportive. He's in there going, 'I believe you can do it, go for it.