Opera hat described as: Some sources have taken this to describe an early folding top hat, although it is not explicitly stated whether Dollman's design was specifically for male or female headgear. Dollman's patent expired in 1825. Operating from Poissy, Paris, France, around 1840, Antoine Gibus's design for a spring-loaded collapsible top-hat proved so popular that hats made to it became known as "gibus". They were also often called "opera hats" due to the common practice of storing them in their flattened state under one's seat at the opera, though the term can also refer to any tall formal men's hat. The
Femme au Chapeau Femme au Chapeau Femme au Chapeau or Woman with a Hat is an oil painting created circa 1906 by the French artist and theorist Jean Metzinger (1883–1956). The work is executed in a highly personal Divisionist style with a marked Proto-Cubist component during the height of Fauvism. "Femme au Chapeau" exhibits a presentiment of Metzinger's subsequent interest in the faceting of form associated with Cubism. The painting now forms part of the collection of the Korban Art Foundation. "Femme au Chapeau" is an oil painting on canvas with dimensions 44.8 x 36.8 cm (17 5/8 x 14½ in.), signed "J.Metzinger"