Although his rep says that Keith Urban, 39, is “still undergoing treatment,” the country singer is out of rehab. He and his wife of only five months, actress Nicole Kidman, 39, enjoyed Sunday brunch yesterday at the Polo Lounge in Los Angeles. It was the first time they had been seen together since November 12th, when they were photographed strolling the grounds of the Betty Ford Center in Palm Springs. This is the second time Keith...