Nicole Kidman was overwhelmed when her country star husband Keith Urban wrote her a touching love song.

The singer co-wrote Thank You, a song on his forthcoming album Defying Gravity, for his Hollywood superstar wife. And Kidman was left "very touched" when she heard the beautiful lyrics her husband had written in her honor.

Urban tells USA Today, "(It) became quite a confessional - much more intimate than I might have written had I intended to write about her. It was very instinctual and very much from the heart. We did a quick recording of it, and I took it home and played it for her that night. I think she was very touched."

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(This news article provided by World Entertainment News Network)