Executive Meddling: Shaw refused to write an ending where Eliza returns to Higgins, so producer Gabriel Pascal and his team created this ending on their own without telling Shaw; the ending as filmed (and re-used in My Fair Lady) includes only dialogue that was heard earlier in the film, thereby not violating Shaw's credit "all dialogue by Bernard Shaw".
What Could Have Been: Mrs. Patrick Campbell, the original Eliza, was offered the role of Henry Higgins' mother in the film as a Remake Cameo, but declined.
, was forty-nine when she created the role.