Visible crew/equipment: When Professor Higgins is having Eliza practice saying the letter H by blowing into a tube to make the flame waver, the paper she's holding is actually Rex Harrison's lines. Once the paper starts to burn and the camera angle changes, you can read them and it's practically all of his lines for the whole scene.
My Fair Lady (1964)
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Directed by: George Cukor
Starring: Audrey Hepburn, Rex Harrison, Wilfrid Hyde-White, Stanley Holloway
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More mistakes in My Fair Lady
Landlady: ...and what things does she want? Her bird cage and her Chinese fan. But she says, never mind about sending any clothes.
Trivia: Audrey Hepburn was not the only voice that was dubbed. The actor who plays Freddy had his voice dubbed as well, so in their scene together with the song 'show me' neither of them are singing.
Question: Higgins presumably knows about the ball's high standards of dress for men and women. Why then is he the only man there who is not wearing white gloves (which are routine for such occasions)?
Answer: Higgins is eccentric and a bit anti-social. He does not always follow social norms and protocol. He somewhat enjoys upsetting his snobbish peers, as well as his mother. He's also highly focused in the moment on passing off Eliza as a high-society lady.
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