What famous black garment was popularized by fashion designer Coco Chanel?

A little black dress is a black evening or cocktail dress cut simply and often quite short. Fashion historians ascribe the origins of the little black dress to the 1920's designs of Coco Chanel. It was intended to be long-lasting, versatile, affordable, accessible to the widest market and in a neutral colour. The "little black dress" is considered essential to a complete wardrobe by many women and fashion observers, who believe it a "rule of fashion" that every woman should own a simple, elegant black dress that can be dressed up or down depending on the occasion: for example, worn with a jacket and pumps for daytime business wear or with more ornate jewelry and accessories for evening or a formal event such as a wedding or a ball.

Gabrielle Bonheur "Coco" Chanel (1883 – 1971) was a French fashion designer and a businesswoman. She was the founder and namesake of the "Chanel" brand. Chanel was credited in the post-World War I era with liberating women from the constraints of the "corseted silhouette" and popularizing a sporty, casual chic as the feminine standard of style.