What is the author's style in Once in a Lifetime by Moss Hart?

In Hollywood, image is everything. Hart and Kaufman use this fact in the costumes called for in the directions of Once in a Lifetime. To add some visual comedy to the play, Miss Leighton, the receptionist at Glogauer, is supposed to wear a black evening gown and pearls, even though her scenes take place in the morning. Helen Hobart, the famous movie critic, dresses in similar fashion. Hart and Kaufman write "Her ensemble is the Hollywood idea of next year's style a la Metro-Goldwyn." Glamorous is what is expected from Hollywood, even among its receptionists and film critics.