Petite size

In fashion and clothing, a petite size is a U.S. standard clothing size designed to fit women of a short, smaller build of height or less.
Background.
The definition of petite is used to describe a fairly short woman or person (usually under ). Some may also describe petite as someone whom is very slim or some even believe it's a mixture of the short and slim. However, the word "Petite" which originates from the French language, defined as small, was usually used to describe a shorter or smaller woman or person.
Upon this word becoming more well known to the English language, around the early 90's the definition was remodeled to describe a woman under the height of , which eventually became a popular term used to compliment short women. When the word took a trend, clothing brands and blogs used it to market towards shorter women.
Frequency.
The average height of an American woman is roughly , thus about half of the population of women suit the petite definition.
In the UK and throughout Europe the average height of a woman is around .