Nancy Mitford's 1945 novel, about cousins Frances and Linda, their childhood (loosely based on Mitford's own); and more particularly Linda's life and loves. The 2nd half of the book, set in Spain during the Civil War and Paris just before World War 2, where she meets the love of her life, is especially poignant. It's a very funny portrait of English upper-class life between the wars. And the ending might even make you a bit misty-eyed. The best of all Mitford's novels.