Nicole Kidman shared an unexpected photo of her longtime husband, Keith Urban, on Friday and he looks so different. The Undoing actress, 53, took a walk down memory lane with a black-and-white snapshot of the country music singer as a child. MORE: Nicole Kidman marks special occasion from inside her modern bedroom - and it's hugeIn the photo, Keith, 53, wore flip-flops, flares and a vest as he played the guitar.