This ratio makes for dimensions of somewhere around a 25-inch waist and 36-inch hips. Mathematicians at Cambridge University discovered that these proportions make for the ideally sexy walk, with “a more angular swaying and bounce to the hips.”Famous women that fit this figure include Jessica Alba and Venus de Milo! Marilyn Monroe unfortunately missed the cut by one hundredth of an inch. Check out this article in Gizmodo to see who else made the cut. Also, the ideal ratio for men is 0.9.