Country star KEITH URBAN is keen not to spend too much time away from his expectant wife NICOLE KIDMAN - he wants the actress to join him on tour after she gives birth to their first child.

The Hours actress is expecting her first-biological child with Urban in summer (08), and the singer would love the mother and tot to accompany him on the road.

However, Urban understands the strain of being a new mum may hamper his plans to have a family orientated tour bus.

Urban tells People.com, "I love having her (Kidman) with me when I tour, but at the same time, it's work. You don't want to ask too much of your family."

"We'll just have to see what works for us."