production to give them a  magical look. The rubies were actually glass beads imported from  Austria and individually attached to the shoes with a special spray  adhesive. This later proved problematic, as the hot stage lights  melted the adhesive, and the young actress fidgety movements would  often knock the beads off. Tired of chasing after detached beads,  the wardrobe staff finally ordered the shoes to be worn only when  visible on camera.