Paperback: The Mitfords Ed. Charlotte Mosley

With all the hilarity and snobbery of Britain's most "U" family, these "Letters Between Six Sisters" will delight Mitford fans and enrage their critics. The index goes from Hitler ("Poor Sweetheart Führer") to Jerry Hall ("a sort of beautiful, goat-like, tall creature"), and that's just the "H"s. All the glamour and trauma of a mostly forgotten age – though as Diana admitted, "The Mitfords would madden me if I didn't chance to be one."