Dressing gown

A dressing gown or a housecoat is a loose, open-fronted gown closed with a fabric belt that is put on over nightwear on rising from bed, or, less commonly today, worn over some day clothes when partially dressed or undressed in the morning or evening (for example, over a man's shirt and trousers without jacket and tie).

[1] The gowns were frequently made out of fabrics such as printed cotton, silk damask, or velvet and were mainly worn by upper class men.

Ladies wore their dressing gowns while eating breakfast, preparing for the day, sewing or having tea with their family.

By the end of the 20th century dressing gowns began seeing less frequent usage and fell out of fashion within the United States of America, as wearing such garments became increasingly associated with idleness and lethargy.

The Japanese yukata is an unlined cotton kimono worn as a bathrobe or as summer outdoor clothing.

A dressing gown from the 1850s
A modern dressing gown