London, Mar 4: Kylie Minogue is known to have the best posterior in tinsel town, and now it has even been proven scientifically.

Dr. David Holmes, a psychologist, has come up with a formula to find out what makes Kylie's backside so bootylicious, and discover which celebs have got those great curves.

His calculations include scores for shape (S), circularity or roundness (C), bounciness (B), firmness (F), and texture or cellulite (T).

The formula also takes into account a factor called V, which is a woman's hips/waist ratio- the bigger the hips in proportion to the waist, the curvier a woman appears.

And the magic formula is (S+C) x (B + F)/(T - V), which, if gives a score of 80, you're looking at a perfect bum.

Aussie singer Kylie Minogue has turned out to be the only lady to have achieved that cracking score.

"Kylie would score amazingly well on sphericality and symmetry," the Daily star quoted Holmes as saying.

He added: "Her bum is pretty much perfect in these areas - even more so than the likes of Kelly who works out at 74."

Other Hollywood beauties on which the formula was applied were Jo Guest who scored 64, Chanelle Hayes with 76, Lily Allen with 70, and Lucy Pinder with 62. (ANI)