Nicole Kidman has said that her children keep her feeling young as they keep her busy and bring joy to her life.

The 47-year-old star, who is married to singer Keith Urban, told Magic FM: "There's something true about their life force. Children keep you young, they keep you engaged and they bring joy...

"It's like we always dance at Keith's shows – Sunday (6) and Faith (3) are there and we'll be dancing side stage."

Kidman also commented on her marriage of eight years to Urban saying: "We stay really tight, we're very, very close. We have friends, but our priority is each other – we both grew up with parents who are like that."

She added, "We're crazy. We'll speak 10 times a day. After nine years together we're both so grateful to have somebody that we not just love but who we like as well. It's a great combo. We all know what it's like to love someone and not really like them."