I bought a print of this Fragonard painting when I was 18. I was interested in 18th Century French history and even more interested in fabrics and fashion of that era. So when I looked at this, I saw lace, silk, the hat and the slipper shoes. I studied the construction of the clothes and how the hair complimented the fashionable dress.
It was only after a lecture on 18th Century art that I found out it was a lovely example of l8th Century soft porn. It's not just a pretty girl in a silk dress on a swing. She's kicking her leg high enough to lose a slipper, high enough for the well-dressed gentleman hiding in the bushes to get a good view up that leg. Ladies of that era did not wear undergarments and by the look on his face, he's enjoying the view. So who paid the shadowy figure (possibly wearing a cleric's collar) in the background to send the swing so high? The lady with the high kick or the gentleman with the low look.
It's not what we look at but what we are taught to see.