It's interesting what American culture seeps so far around the world.
Farrah was most famous for her poster.
The Dep't of Making Shit Up finds that 63% of American males age 38-50 have fapped to that image. Why: timing. It was approximately 1976, and America had not really discovered the female nipple. I know this seems far-fetched in our modern day and age, but it was a tremendous advance for its time. The poster was risque. Shortly after this, Jacqueline Bisset would do her white T-shirt move in "The Deep", and America would discover that the nipples were actually attached to larger areolas and breasts and things.
I'm sure the Aussies discovered the nipple in the late 50s, early sexual bloomers that they are.