There never was a glass slipper. Cinderella was merely wearing a pair of shiny leather stilleto/pumps on a very glass like, glossy, floor (Please see exhibit A, below). The Prince was so enamoured by her beauty, that he made up this tale,… Ah! the folly of youth.
Well,…, That is my story (investigative journalism to be precise) and I am sticking to it… 🙂
(PS:- The glass manufacturing technology hadn’t been perfected back then,… God forbid if the slippers broke… 🙂 )