Keith Urban dedicated a Valentine's Day song to pregnant wife Nicole Kidman.

The country singer was playing in New York's Madison Square Garden when he performed his hit 'Got It Right This Time' in tribute to Nicole - who is currently in Australia.

He told the crowd on Wednesday: "It's Valentine's Day here tomorrow, but today it's already Valentine's Day in Australia."

The tribute ended a lively show for Keith, who at one point walked out into the crowd and played a song on his guitar before autographing the musical instrument and handing it to an audience member.

At the end of the show, Keith told the audience: "It won't take so long to come back this time. We'll be back in New York really soon."

Keith recently revealed he is planning on writing a song to dedicate to his first child when 'Moulin Rouge' star Nicole gives birth in July, adding: "It has been a really beautiful journey."

RELATED PHOTOS AND ARTICLES
Keith Urban - Farm Aid 2002 - Concert To Benefit Family Farmers In The United StatesNicole Kidman - G'Day LA 2nd Annual Penfolds Gala - Black Tie DinnerNicole Kidman - The Hours Movie PremiereNicole Kidman - 2004 Vanity Fair Oscar PartyNicole Kidman - 1st Annual Rome Film Festival 2006 - FUR Premiere
No Sex For Lenny Kravitz For YearsNicole Kidman Loves Her Pregnancy Breasts
Keith Urban Over The Moon About Impending FatherhoodNicole Kidman Takes No Baby Risks
Mariah Carey Almost Backed Out Of Film Because Of Fake NoseEminem Almost Starred In Jumper