The Green Hat is a 1924 sentimental novel about the bright young things of London by Michael Arlen. The protagonist of the novel, Iris Storm, is a femme fatale with a Hispano-Suiza automobile who is involved in romantic affairs in Bohemian London in the post-World War One era. == Background == The genesis of the novel was Arlen's relationship with writer Nancy Cunard in 1920, although she was married to Sydney Fairbairn at the time and was also involved with Aldous Huxley. During the 1920s, …