According to, like, math, Jessica Alba has the sexiest walk of any female celebrity, based on calculations done by mathematicians at Cambridge University (UK) on the ratio of hips to waist and sex appeal. In case you have a tape measure and your paranoia handy, the "perfect" measurements are a 25-inch waist and 36-inch hips. Other measurements that give you a 70% waist to hips ratio work too. Um, has anyone told hipless Hollywood that? [Earth Times]