Cambridge University has calculated the optimal waist-to-hips ratio of the sexy woman is 0.7. Notable real world examples include Marilyn Monroe, Jessica Alba and Venus de Milo.
This echoes preliminary findings made in the 1990s by Seattle scholar Sir Mix-a-Lot, who in his uniquely audio dissertation also pointed out optimal environment and lifestyle factors to obtaining your own “motor in the back of your behind”:
# Expand your fitness regime beyond sidesteps and sit-ups
# Refrain dining on red beans and rice
# Ignore beauty advice from Cosmopolitan Magazine