body mass index is a measure of body weight relative to
Body mass index The body mass index (BMI) or Quetelet index is a value derived from the mass (weight) and height of an individual. The BMI is defined as the body mass divided by the square of the body height, and is universally expressed in units of kg/m2, resulting from mass in kilograms and height in metres.
Bust/waist/hip measurements Bust/waist/hip measurements (informally called vital statistics) are a common method of specifying body proportions for the purpose of fitting clothes. They match the three inflection points of the female body shape. It is also often used in women's personal ads or Internet profiles to indicate their appearance. In human body measurement, the three sizes are the circumferences of the bust, waist and hips; usually rendered as three sizes: xx–yy–zz in inches, or centimeters. The three sizes are used mostly in fashion, and almost exclusively in reference to women,[1] who, compared to men, are more likely to have a narrow waist relative to bust and hips. An important difference exist when measuring men's hips for most fashion design purposes. In these instances, men's hips are measured at the genitals.