Allright, so I've been reconsidering this whole shoe business. When you think about it, Cinderella's story is pretty intriguing:
What is it really about the shoe? It is a sign of recognition and identification - the shoe functions as a kind of symbolic ID. Knowing nothing of the mysterious woman (particularly not her name, the ultimate signifier of identity), all the prince is left with is an object, or rather: a commodity (and it is a commodity of femininity, of course. Think Sacher-Masoch and fetishism, and you know what I'm talking about). But isn't it odd that a commodity should be the proof of your identity? I mean, seriously, what are the chances that in the whole kingdom there is only one person who can fit this shoe without having to cut off her toe or heel?
She must have had a particularly small foot; and isn't it very telling that the shoe doesn't fit the sisters because it is too small? How different would the story have been told if Cinderella did have, let's say, shoesize 44? But of course, if the shoe would have been too big, there wouldn't have been the possibility for her sisters to show the utter determination in trying to fit this shoe: namely, that they were willing to cut off their own toes or heels; thus sacrificing parts of their own body to fit an ideal of femininity.
So Cinderella's identification is enabled through a commodity and a commodity that implies a particular kind of feminity (small, frail, etc.). But it gets more complicated. Because the shoe is an emblem of a masquerade - Cinderella has to leave the ball (and her shoe) behind, because she was going to risk revealing the guise at a certain hour. What the prince is looking for is a mask; a figment of a night's charade; he's looking for a princess that does not exist; a princess whose carriage turns into a pumkin at midnight. (And I ask you this one thing: why didn't the shoe disappear or change back into a cabbage?)
Cinderella, thus, is a kind of drag queen for one night, if you think about it. Her identity - the one the prince is looking for to reveal by shoeish means - is a fake; it's a drag. And that's probably why the name wouldn't have worked. You can change names, you can't change feet. Cinderella is - when you think about it this way - a story about the uniqueness of bodies; the uniqueness of female bodies, the uniqueness of a female nature.
Though in the end, obviously, Cinderella isn't about magical drag at all; about femininity as a sort of drag. It is about the return of your real (female and social) idenity: Cinderella deserved to be a princess. She deserved to wear small glass slippers and ride a white horse. Because the magical masquerade of the night of the ball wasn't a masquerade at all - before her father died and her stepmother took over, she used to be a noble woman, not a maidservant counting peas.
And the morale of this little story is: The true (read: heterosexual) love of your life will make your real identity appear; it will bring the shoe that reveals it all: your worthiness, your femininity, your social standing, your merit.
And isn't that, I ask you, a bit too much to expect from a person?