Dame Helen Mirren and Joanna Lumley are to summon up the "jolly hockey sticks" era for BBC Radio 4 with a season of classic girls' school tales.
The stories from the 1920s, 30s and 40s include Enid Blyton's The Cheat and will be broadcast over three days next month.
Actor Martin Jarvis - a familiar voice on the station - has directed the programmes.
Far from the thoroughly British nature of the tales, the actresses' busy schedules meant they had to record their stories in Los Angeles and New York.
Dame Helen will be heard voicing A Midnight Revel by Angela Brazil, dating back to 1925, while Joanna will read Blyton's 1947 story.
Also appearing in the short afternoon series, Good Show Clarissa, will be Cranford star Lisa Dillon who is reading Hilda Richards' 1939 tale Jemima Gets Them Guessing.
Joanna - who recorded her programme while working on Broadway - said: "Blyton had a very clear sense of right and wrong, and this short story is rather wonderful in the way the dilemma of being a cheat is resolved.
"I was at boarding school and I recognise the quietness of a dormitory when all the other girls are asleep, the face-reddening terror of being found out doing something wrong, and the absence of parental influence except as a distant memory of all that is decent."
The programmes are being broadcast on March 8, 9 and 10 at 3.30pm.