Gillian Lynne's see-through blouse
When I first saw this movie (which is a very enjoyable swashbuckler), I was astonished to see Gillian Lynne (who plays Marianne, the dancer/"girlfriend" of Mendoza) not only wearing a see-through turquoise blouse throughout her part in the film, but braless underneath to boot. Her breasts are clearly visible in all her scenes. I'm fine with this, but I can't understand how such obvious (only slightly obscured) nudity got past the censors in 1953 -- or, for that matter, how the filmmakers either missed it or got away with it in the first place!
Either way, it's certainly unique for a mainstream motion picture of that era, and Ms. Lynne is lovely to look at. I wonder if any public word-of-mouth about this unexpected bonus boosted the film's box office back then?
[Update/confession (11/19/07): I had erroneously stated in the original post (7/16/07) that it was actress Yvonne Furneaux who did this dance scene. The next poster has corrected my error. In homage to Orwell, I have in turn corrected my original mistake in this update. But as I don't entirely believe in the ethics of rewriting history, I make note of my initial error here.]