The Duchess of Cornwall is set to appear on the long-running radio soap The Archers.
Character Caroline Sterling, played by Sara Coward, tonight revealed that Camilla will be on BBC Radio 4's rural drama.
She will feature in the programme in her role as the president of the National Osteoporosis Society.
The Duchess, who has been an avid fan of the show for many years, decided to make her brief appearance at Grey Gables hotel to celebrate the 60th anniversary of the programme and to highlight the charity's work.
It is not the first time a member of the Royal Family has appeared on the show. In 1984, Princess Margaret appeared in an episode marking the centenary of the NSPCC.
Camilla, who recorded her part in early December with Ms Coward, will be on the show on February 16.
On the same day as the broadcast, she will travel to BBC Birmingham to meet members of the cast.
Ms Coward, who also appeared alongside Princess Margaret in 1984, said: "It was fantastic to go to Kensington Palace to record with Princess Margaret 27 years ago and Clarence House was still more fun.
"The Duchess was relaxed, charming and wonderfully natural."