Nicole Kidman, Keith Urban lock lips at US Open

The country singer played up to the cameras after spotting himself and his wife on the giant screen at the tennis tournament in Flushing Meadows.

He especially pounced on his wife and gave her a smack on the lips, reported Sun online.

The crowd at the event cheered the couple, who has been married for six years.

They sat in the audience for US star Andy Roddick's match against Australian player Bernard Tomic.