The search for an actress to play Scarlett O'Hara, by producer, David Selznick for his forthcoming blockbuster, 'Gone With The Wind' is almost as i nteresting as the film itself. There was a host of glamorous contenders for the part - just about every actress in Hollywood was mooted at some time or other, and the winner was a rank outsider, an almost unknown actress, Vivien Leigh, who was not even American.