ARSE PERFECTION

British psychologist David Holmes, claims to have come up with a calculation for determining the perfect female backside:

(S+C) x (B+F)/T - V, which takes into account shape, circularity of buttocks, "bounce factor," firmness, texture of skin, and vertical ratio.

No examples are given of the formula in action but there is this:

In a survey of 2,000 U.K. adults, Holmes found most women identified Jennifer Lopez's booty as perfectly balancing curves and athleticism. Men, on the other hand, were more apt to be aroused by Kylie Minogue's bum, which Holmes says has a "shape to match cartoon beauties you thought did not exist in the real world," and boasts a "perfect wobble and resilience factor" evident in her music videos.

Kylie looks pretty damn good from any angle.