Actress DAME HELEN MIRREN claims the key to her youthful looks is simple: being happy. The Oscar winner - who won the Best Actress Oscar for her role as British monarch ELIZABETH II in THE QUEEN last month (FEB07) - has revealed her unconventional beauty secret, but admits she also subscribes to a healthy lifestyle.

The 61-year-old "Queen" says, "I'm quite a happy person. I always have been. My tendency is to smile." But Mirren, who was pictured tucking into a burger after the Oscars ceremony in Los Angeles (25FEB07), still has some health concerns. She adds, "I don't drink enough water. I don't do enough exercise. I eat fairly healthily but not that healthily, as everyone who saw me munching into a burger will know. It was my first for four years. I don't eat burgers regularly. I don't think people should."