Wearing short skirts and dresses during the summer means showing off a lot of leg,and in order to find out if you have the perfect pins,scientists came up with a formula. Former Friends star Jennifer Anistons ideal shape and perfect skin was used as an example by scientists,who took her vital statistics and came up with the formula (T / C) x (F + S) = I,the Daily Star reported. Even though it looks complicated,T/C simply stands for the thigh-to-calf ratio,F is the superfine feel/texture of the skin and S is the semi-gloss sheen. The formula reveals that 14.67 is the ultimate pin number. Therefore,the Perfect Pin equation is (1.63) x (5 + 4) = 14.67. Research from electric shaver manufacturer Braun,also revealed that 70 percent of Brit men like women to have curvier legs like R n B diva Beyonce Knowles,29,rather than stick-thin pins like Victoria Beckham,37. They also preferred a thigh-to-calf ratio of 1.63-to-1 for a fuller leg. But 62 percent of weight-conscious women opted for a look like Posh,with a ratio of 1.2-to-1.