The term 'Cotillion Girls' refers to young women who are chosen to participate in a formal ball or DANCE. The term is derived from the French word cotillon, which means 'DANCE'. These young women are usually chosen for their poise, grace, and beauty, and they often wear formal gowns and accessories. The term 'DEBS' is an acronym for 'Debutante Ball', which is a formal event where these young women are presented to society.