Expecting a baby any day, Keith Urban dedicates song to wife

As his wife Nicole Kidman waited in the wings, singer Keith Urban took the stage Saturday at a concert in his adopted hometown of Nashville, before a crowd 50,000 strong. The couple expects their first child together this month -- a point driven home by Keith, himself, when he dedicated the song 'Better Half' to his "very, very, very, very, VERY pregnant wife!"

Keith, 40, and Nicole, 41, know the sex of their baby, but are keeping it private. The baby will join Nicole's children with ex-husband Tom Cruise: Isabella Jane, 15, and Connor Anthony, 13.

Source: People; Photo by Splash News.