I mean it's statistically likely unless Cinders has really odd feet. Even made to measure,they'd have fit on someone.
Of course in the Disney version she'd be beautiful but evil / conniving. Her and her family would lie and say it was her,but the other slipper broke etc. He'd pretend to recognise her cos he'd feel a fool or would admit doubt and she'd cry so he'd retract it. Before it was too late Cinders would somehow uncover the lie, present the shoe and he'd actually recognise her and all would be well.
Or perhaps he'd marry the evil future Queen, and at some point Cinders would come into her employ and the King would fall in love with the maid (Cinders), the Queen would find out and plot to kill her but of course would fail etc.
Or perhaps the wrong girl is forced to lie by her family even though she's in love with someone else, they marry because the Prince admits he can't really remember and they go on eventually to be happy and provide a couple of kids. Meanwhile Cinders StepMom eventually does but not before marrying off the sisters to some old dudes with money who are too dodgy to get nice wives. The will, which the step mother forgot to change, leaves it all to Cinders after her SMs death and she gets a load of abandoned animals and turns her house into an animal rehab / petting zoo. One day the King visits, sees her and recognises her. He can't say anything as his wife is there with the kids. Then the farm hand comes out and whisks Cinders up and plants a kiss on her lips. He realises they've both found happiness and theirs was never true love after all. The end.
What do you reckon happened after someone else fitted the shoe on?