Hollywood star George Clooney has told an American magazine he has undergone cosmetic surgery - to unwrinkle his testicles. The Ocean's Eleven star denied reports he had surgery to remove lines from his face, but jokingly teased journalists at Esquire magazine with a story about another type of procedure. He says, "I did get my balls done though, I got them unwrinkled. "It's the new thing in Hollywood - ball ironing."