The ruby slippers Judy Garland wore in the 1939 classic "The Wizard of Oz" have become nearly as iconic as the film itself. But in the upcoming film adaptation of the Broadway hit "Wicked," sharp-eyed fans noticed a shift: Nessarose's magical shoes are silver instead of ruby red.

Costume designer Paul Tazewell tells PEOPLE that he pulled inspiration from L. Frank Baum's 'The Wizard of Oz'

Dorothy’s ruby slippers from The Wizard of Oz remain the most iconic pair of footwear in cinema history. The shoes, worn by Judy Garland in the original 1939 film, have been auctioned off for astronomical prices several times over the last eight decades.