All There in the Manual: Each of the courtesans at the Moulin Rouge has a specific name, along with a costume that reflects that name. Examples include French Maid, Petite Princess (a midget), Madame Fromage (a Big Beautiful Woman in clothing that suggests desserts), Travesty (who wears a man's suit and top hat on the top of her body, and a can-can dress on the bottom), and Pearly Queen (who wears various expensive-looking items, such as furs and pearls).
Fake Nationality: The French characters are played by Australian and British actors, and an Argentinian character is played by a Polish actor.
Non-Singing Voice: Jim Broadbent and John Leguizamo are both dubbed over when Ziddler and Toulouse sing. (The rest of the cast members do their own singing.)