Nicole Kidman rules Melbourne's red carpet.

Nicole Kidman kills it on the red carpet in Melbourne.

Last night Keith Urban and Nicole Kidman were special guests at the inaugural Swisse Celebrate Life Ball at the Grand Hyatt who support the Monash Children’s Hospital.

Kidman wore a Prada dress and told The Herald Sun she loved dressing up, “I have the great fortune of having access to some of the greatest designers in the world,’’ she said. “But a lot of it is done quite quickly, even though I do love couture.”

What did Keith think of her va-va-voom dress? “She looks amazing, she always does,” he said.

Kidman was only in town for a few hours, heading off to Shanghai this morning to attend the Shanghai Film Festival. Urban will be heading to Townsville today to kick off his Australian tour and Kidman will join up with him and their 2 children on Monday.

Kidman said it was important that the family visit Australia often. “It’s very important as both sets of grandparents live here and we want our children, even though they were born in Nashville, to feel very much a part of Australia ... which they do,” she said. “They have lots of friends here and lot of strong ties here already.”