Continuity mistake: When Cinderella opens the curtain before waking up Lucifer, the hallway has a large window, a mirror and a stool beside the the stairs, but a door to music room has appeared on the hallway when Lucifer escapes the singing and playing of the stepsisters. This can be also noticed when stepmother hears Cinderella humming the ball waltz and goes after her, the window is back in its place rather than the door. The carpet is also covering whole floor in the scene where Lucifer exits the non-existing music room and the railing is shorter than in other scenes. (00:09:50 - 00:26:25)
Continuity mistake: Jaq has put three beads on Gus' tail. The shot cuts to Lucifer, then back to the mice where Jaq is again placing bead number three on Gus' tail. (00:36:25)
Continuity mistake: When Jack is putting the beads onto Gus' tail they squeeze together as if made of gel. (00:36:30)
Continuity mistake: As Cinderella descends the staircase after her wedding to The Prince, she is obviously wearing a long sleeved gown. When she waves through the window of the carriage, however, the gown is short sleeved.
Continuity mistake: When Cinderella enters her stepmother's room after the mouse under the teacup incident, she closes the door behind her. Her shadow is thrown on the door behind her, yet in the next shot, when she nears the bed, her shadow is shown distinctly on it.
Continuity mistake: When Cinderella goes into the room to get the cat she is at the door in the hall way and opens it in one direction, the next scene shows the cat on a cushion with the light from the hallway going in the opposite direction.
Continuity mistake: When the stepmother is saying good night to Cinderella after the dress was destroyed, she has her hand on the door handle. The handle goes from pointing down to normal again in a single frame.
Continuity mistake: When Anastatia runs into the stepmother's room because of the mouse-under-the-teacup incident, she just shoves the door open without using the door handle. But when Cinderella goes in after her, she has to turn the handle.
Continuity mistake: After throwing the bookends away, the King leans on the table and stares at the Duke. In the first shot the King's tummy lies on the table and his left hand grabs the left edge. A shot later he is half a meter away, standing by the table with both hands lying by his belly.
Continuity mistake: When the birds drop the sponge into the basin there's a little mouse on the right standing on the edge leaning on a jar. A shot later, in the close-up, she's gone.
Continuity mistake: When the stepsisters are trying on the glass slipper, the shape of the stepmother's pocket, which is holding the key to Cinderella's room, changes between shots. The bottom of the pocket is flat in one shot, and pointed in another.
Continuity mistake: The Fairy Godmother turns the four mice into horses. When they change back three of the mice are the same, but one is different. It goes from Jaq, Gus, Luke (the little mouse in mint green) and one of the twin mice to Jaq, Gus, and both of the twins. Luke is absent.
Continuity mistake: When Jack and Gus come out of the trap and go to Cinderella, we see that her right hand is on her right leg. But in the next shot both her hands are holding the shirt Gus is going to get.
Continuity mistake: When Cinderella ascends the stairs with three breakfast trays, Gus is under the cup in her right hand tray. That right hand tray (with Gus) is dropped off in the first of the three rooms in order, which is Drizella's room. When screams are eventually heard and Lucifer runs to catch Gus, they come from the second (middle) door, which is Anastasia's room and it's Anastasia who had the mouse.
Continuity mistake: When the king throws his crown and breaks the window, note the lower part, a part shaped like a V is standing out. In the shot following it's now shaped like a lower case R.
Continuity mistake: After the King tells the Duke to keep an eye on the waltz, the way the Duke holds his monocle differs between the wide angle and the POV shot.
Continuity mistake: When the stepsisters approach the prince the palace hall is suddenly empty.
Continuity mistake: In the aerial angle of the palace, when the girls are about to salute the prince, there are about a dozen girls waiting. A shot later there are twice as many.
Continuity mistake: When Cinderella arrives at the palace, in the close-up the soldiers are very close together, their shoulder pieces touching each other. In the wide angles they're a meter apart.
Continuity mistake: When the King is woken up by the Duke, the position of the red duvet keeps changing in every shot of the scene.
Answer: Cinderella's entire outfit was magically created by the Fairy Godmother. Not only was the spare shoe Cinderella had in her possession identical to the other one, it likely would be charmed so that she is the only one who can wear it. It's similar to young Arthur being the only person who could pull Excalibur from the stone because he was the true king. No other woman who attended the ball wore glass slippers. If they had, they'd be able to also produce the spare shoe as proof.
raywest ★