A original vintage illustration from Le Rire magazine.
The caption reads, "Entrance of Cha-u-kao"
Cha-U-Kao was the name of a French entertainer who performed at the Moulin Rouge and the Nouveau Cirque in the 1890s. Her stage name was also the name of a boisterous popular dance, similar to the can-can, which came from the French words "chahut", meaning 'noise' and "chaos". (Wikipedia)