I don't know if anyone reading this is unfamiliar with Cinderella. The thought is unthinkable to me, but people all around the world read this, and who knows what children's stories kids are reading these days? They're not necessarily sticking with stories first written in 1697, and...
Oh ye gods what if people are still watching The Simpsons in 2353.
ANYWAY! My point is, and I suppose spoiler warning for anyone unfamiliar with Cinderella, but there needs to be a reason why Cinderella is difficult to identify after the ball, and it wouldn't be this comic if a basic feminine transformation was enough to disguise Tedd.