Big Little Lies actress Reese Witherspoon was quick to send the country singer a birthday wish.
“Happy happy Birthday KU!! Sending you ❤️!” she wrote.
Urban shared a photo of his tour bus which was covered in balloons.
“When u can’t even get on your own bus cause your road family is SOOOOOO awesome !!!!!!!” he wrote. “Thank u all GRAFFITI U band and crew – THE BEST !!!!!!!”