When did Gabrielle Chanel become coco Chanel?

Gabrielle Chanel adopted the nickname "Coco" during her early career as a cabaret singer in the 1900s. The name is often thought to have originated from a song she used to perform, "Qui qu'a vu Coco," which contributed to her nickname. Over time, Coco Chanel became synonymous with her fashion brand and the iconic style she established.