running radio soap opera “The Archers” will soon be getting a royal treatment. Prince Charles's wife, Camilla, is set to play herself on an episode of “The Archers,” a rural drama about country life that has been airing on BBC's Radio 4 for six decades. The news of Camilla's cameo was revealed by the character of Caroline Sterling – played by Sara Coward – on Wednesday night's broadcast. The Duchess of Cornwall, who has described herself as an avid fan of the show, will appear in her role as president of the National Osteoporosis Society in an episode to air on Feb 16. The broadcaster says she has already recorded the segment. Camilla won't be the first member of Britain's royal family to appear on the program, which reachers 5 million listeners a week. Princess Margaret participated in a 1984 episode.