It is the holy grail of the fashion and beauty industries: a scientific blueprint for the most beautiful women, and men, in the world.

Researchers have thrown away the old vital statistics and, instead, focused on how the dimensions of different parts of the body relate to height and body mass index (BMI) to give the perfect physique. Perhaps surprisingly, two of the most important measurements are the girth of the thigh and the slimness of the calf.

The researchers, from the University of Gdansk in Poland, studied the vital statistics of 24 finalists in a national beauty competition, together with those of 115 other women. They said that while weight, height and hip ratio were normally used to assess female attractiveness, these might not throw up crucial differences between the super-attractive and others.

For men, scientists said height, BMI, waist-to-hip and waist-to-chest ratios were key measures.

Super-attractive women had a thigh-to-height ratio some 12 per cent lower than other women, giving them a more slender look. Skinfold tests on the calf showed 15mm of fat compared with 18mm in other women.

The study also showed that the average super-attractive height was 5ft 9in, with the waist 76 per cent of the size of the chest, and 70 per cent of the size of the hips. Models built like Naomi Campbell came closest to the ideal.

"Attractiveness of a woman's body is one of the most important factors in mate selection, and the question what are the physical cues for the assessment of attractiveness is fundamental to evolutionary psychology," said Leszek Pokrywka, who led the study.

Perfect woman: Naomi Campbell

The vital statistics:

Body mass index 20.85

Bust girth to height 49.3%

Waist-chest ratio 1.4

Leg-to-body ratio 1.4

Calf girth to height 19.5%

Height 175cm

Thigh girth to height 29.7

What it all means:

"Super beautiful" women have waists a third smaller than their hips and three-quarters their bust measurement. They have longer legs, and slimmer thighs and calves than the average woman.

Perfect man: Christian Bale

The vital statistics:

Body mass index 26.5

Waist-chest ratio 0.6

Leg-to-body ratio 1

Height 188cm

What it all means:

The physically ideal man is more than 6ft tall, with legs the same length as his upper body. The leg-to-body ratio of 1 makes him appear more muscular, which is why the ideal BMI for men is higher than for women.