Ilene Woods suffered from Alzheimer's disease in the later years of her life. During this time, she did not even remember that she had played Cinderella, but nurses claimed that she was very much comforted by the song "A Dream Is A Wish Your Heart Makes".
(at around 47 mins) The transformation of Cinderella's torn dress to that of the white ball gown was considered to be Walt Disney's favorite piece of animation.
Lucifer was modeled after animator Ward Kimball's cat, a plump, six-toed calico named Feetsy. To prepare for "Cinderella" Kimball studied dozens of cats but had trouble coming up with an effective design for the villainous feline. One day Walt Disney visited the animator's home to talk shop, and Feetsy persisted in brushing against Walt's legs throughout the conversation. Walt, who was not fond of cats, finally declared, "For gosh sakes, Kimball, there's your Lucifer right here!"
Ilene Woods beat exactly 309 girls for the part of Cinderella, after some demo recordings of her singing a few of the film's songs were presented to Walt Disney. However, she had no idea she was auditioning for the part until Disney contacted her; she initially made the recordings for a few friends who sent them to Disney without telling her.
To save money when animating the pumpkin coach, the animators drew the coach to seemingly float on air so that they would not have to animate the turning wheels or the filigrees.