The year 1950, when " Girl with Hat" was drawn, was the year that Foujita returned to Paris for the first time after the end of World War II.In the latter half of the 1940s after the war, Foujita was lost when his visa application to France was not approved, but thanks to the efforts of Frank Sherman, the art director of GHQ who respected Foujita, he obtained an American visa, and in 1949. He went to New York alone. New York at this time was a new centre of art to replace Paris, and Foujita, who stayed there for about 10 months, was greatly inspired. At this time, he created the masterpiece "Café", which is later owned by the Center Pompidou.In January 1950, his application for a visa to France was finally approved, and he and his wife Kimiyo went to Paris, a long-cherished destination. Returning to Paris, Foujita has strong desire to create, and he settled in Montparnasse again, where he painted many works with motifs of the post-war exhausted streets of old Paris and children. At that time, Foujita's art dealers were mainly Paul Petrides, Romanée and Jeanne Jarrige-Bernard, and it is said that the works he created during this period were particularly highly evaluated. He received French citizenship in 1955, converted to Catholicism in 1959, and chose "Léonard" as his baptismal name.