Original: The can-can (more correctly not hyphenated, as in the original French: cancan) is regarded today primarily as a physically demanding music hall dance, performed by a chorus line of female dancers who wear costumes with long skirts, petticoats, and black stockings, that hearkens back to the fashions of the 1890s.
Simplified: The can-can (also spelled cancan or Can Can) is a music hall dance, performed by a chorus line of female dancers who wear costumes with long skirts, petticoats, and black stockings, like the fashions of the 1890s.