The majority of Cinderella was actually filmed with live-action models. Some of these models (especially Helene Stanley) were regular models for multiple Disney films.
Cinderella/Anastasia: Helene Stanley
Lady Tremaine: Eleanor Audley
Drizella: Rhoda Williams
Fairy Godmother: Claire du Brey
Prince Charming: Ward Ellis
King: not sure, sorry
Click on the source for TON more of these photos! SO COOL!