The "little black dress" | RULE OF FASHION

DESCRIPTION: A little black dress is an evening or cocktail dress, cut  should be simple.
FYI:
Fashion historians ascribe the origins of the little black dress to the 1920s designs of Coco Chanel, intended to be long-lasting, versatile, affordable, accessible to the widest market possible and in a neutral color.

Ah yes the  "little black dress" considered essential to complete any wardrobe. 

A MAJOR DRESS REGULATION or STAPLE:
Every woman MUST own a simple, elegant black dress that can be dressed up or down depending on the occasion:

EXAMPLE:
Wear with  jacket and heels for daytime business wear or with more ornate jewelry and accessories  for evening wear.