The Parent Trap (1961 film)/Trivia

• Acting for Two: Every single movie use this method. Of these movies, the only one that doesn't use Double Vision is Hibari's Lullaby (which avoids any shot in which the girls are both visible).
• But I Play One on TV: These movies have convinced a fair number of people, mainly children, that Hayley Mills and/or Lindsay Lohan actually has a twin.
• Fake American: The very British Hayley Mills as both girls; one Bostonian, one Californian.
• Faking Use of the Twin: Susan Henning played the back of Hayley Mills' head.
• Recursive Adaptation: The Hayley Mills Version had a Novelization of the Disney film version of the original novel, including a section of photos from the movie in the center of the book.
• What Could Have Been: The technique used to film both girls at once was new in The Sixties, so Walt Disney was skeptical, and wanted two separate girls in the lead, until he saw how well it worked.