Because most women already have such high self-esteem:
FEW women would claim to have the perfect bottom. But for those in need of reassurance that it is within reach, a scientist has come to the rescue by working out a mathematical formula they believe adds up to the perfect posterior.
The magical figures are (S+C) x (B+F)/T = V. Though the equation looks rather complicated, it is, according to the scientist, simple.
It assesses shape, bounce, firmness and symmetry – all factors that add up to the bottom line.
S is the overall shape or droopiness of the bottom, C represents how spherical the buttocks are, B measures muscular wobble or bounce, while F records the firmness.
V is the hip to waist ratio, or symmetry of the bottom, and T measures the skin texture and presence of cellulite.
David Holmes, a psychology lecturer at Manchester Metropolitan University, England, devised the formula.
He asked about 2000 women across Britain to assess their bottoms using a simple points scale.
For example, those who believed theirs resembled a trodden doughnut scored just one point for shape, whereas those with a small peach scored the maximum five.
Points were then entered into the formula and the closer a bottom scored to 80, the nearer it was to posterior perfection.
"The perfect female derriere has firmness to the touch and a resilience that prevents undue wobble or bounce, yet looks soft with flawless skin," Dr Holmes said.
"Slender thighs and a hip-to-waist ratio of 0.7 will frame the perfect bum, well perfectly."