Scruples is a 1978 novel by Judith Krantz. A direct sequel, Scruples Two, was published in 1992.
The novel details the life story of protagonist Wilhelmina Hunnewell Winthrop ("Billy"), as she evolves from the overweight "poor relation" in an aristocratic Boston Brahmin family to become a thin, stylish woman who is left a vast fortune by the death of her much older first husband and who founds an upscale Beverly Hills boutique called "Scruples."
Born the only child of a distinguished scientist, who is a member of the venerable Winthrop family but must work for a living, Wilhelmina is nicknamed "Honey," a diminutive of her middle name. In her infancy, her mother dies and she is raised by her distant father and a housekeeper. She grows up isolated from her extended family and, with the help of the housekeeper, turns to food for comfort. Around the time she graduates from high school, she is left $10,000 by a maiden aunt, who begs her to spend it foolishly while she is still young. In a last-ditch effort to "find herself," Honey goes to live in Paris with a French family. There, she undergoes a transformation of both body and soul, first changing her name to Billy, then losing weight, and then gaining Parisian style under the guidance of Liliane, the elegant Frenchwoman who is her hostess. She is also introduced to Edouard, Liliane's relative. It is her first sexual affair, but when the aristocratic but impecunious Edouard discovers that Billy has no money, he shows his true colors and ends the relationship.
Billy returns to America and to a Boston stunned by her new body and beauty. Feeling "not in her skin," and unwilling, at 19, to start college, she moves to New York to attend the Katharine Gibbs secretarial school and prepare to earn a living. She meets Jessica, her New York roommate, who teaches her about men and sex and becomes her closest friend, and embarks on a whirlwind adventure of sexual discovery. When she graduates from Katie Gibbs, she is hired by Ikehorn Enterprises, and during a business meeting in Barbados, she sleeps with and subsequently marries the CEO, Ellis Ikehorn, who is far older than she. The next several years are happy ones, as Billy and Ellis live a glamorous life filled with parties, homes all over the world, and regular appearances on the Best-Dressed List. Ellis, however, suffers two debilitating strokes, and Billy moves them from Manhattan to Bel Air, for the better climate.