Urban orchestrates Kidman singalong

Singer Keith Urban organised for 50,000 people to sing 'Happy Birthday' to wife Nicole Kidman.

The country star welcomed Kidman on stage at the Chicago Soldier Field on Saturday, where he was performing a concert.

He then got the audience to wish the actress a happy 41st birthday with a singalong, reports People.

Earlier in the concert, Urban dedicated his track 'Who Wouldn't Wanna Be Me' to his pregnant partner.

Kidman, who was dressed in a black floral tank top dress, thanked the crowd by blowing them a kiss.