the costumes...
I think the costumes designed for this film were lovely, particularly Cinderella's gown for the ball, her clothes while worn in exile and her bridal gown.
Where are these costumes now? Do you suppose any of them were salvaged?
I have heard some horror stories about the ballgown from MY FAIR LADY ending on a rubbish-heap, and similar tales about other famous film costumes.
Also, if you have ever seen the 1970 version of WUTHERING HEIGHTS w/ Timothy Dalton and Anna Calder-Marshall, you'll notice a few costumes that look quite similar to those used 6 years later for SLIPPER. Perhaps they were later rented?