Diana (1973)

After a divorce, beautiful Brit Diana Smythe (Dame Diana Rigg) decides to begin a new life by moving from London to New York City and starting a new career as a fashion coordinator at a Fifth Avenue department store. Living in her brother's empty apartment (to which many young ladies still have keys), Diana learns a new American way of life, assisted by friendly neighbor Holly Green (Carole Androsky), copywriter Howard Tollbrook (Richard B. Shull), window decorator Marshall Tyler (Robert Moore) and new pal Jeff Harmon (Richard Mulligan).