Trivia: Emma Mackey was partly cast as she and Margot Robbie are often confused for each other. Greta Gerwig wanted to make a joke about that fact in the film, but once they were both dressed up as their respective characters they didn't look like each other much, so the idea was scrapped.
Trivia for cinema and rental titles
More Barbie triviaTrivia: Will Ferrell actually walked down Lincoln Tunnel in full costume, causing several minor accidents.
Trivia: Ryan Gosling showed up to the premiere of this film dressed as Beavis from Beavis and Butt-Head. He had previously dressed up as the character a few weeks prior for an episode of Saturday Night Live, alongside SNL cast member Mikey Day, who was dressed as Butt-Head.
Trivia: This film features appearances from WWE alumni John Cena and Dwayne Johnson. There used to be real-life acrimony between the two, as Cena was critical of Johnson for leaving the WWE to pursue a film career, alleging he abandoned his fans and the business he claimed to love. Cena would later apologize for this disposition after pursuing a film career of his own, acknowledging that he didn't make the effort to view things from Johnson's perspective.
Trivia: The working title for the film was "Ghostbusters: Firehouse" before the actual title was revealed.
Trivia: The way Donna attempts to get the bus stopped is a direct nod to the 1994 movie Speed. The bus driver is even named Sam, the same as the driver in that film.
Trivia: When Flikerman cancels his dinner reservation, he tells the restaurant "two, and a high chair," a reference to his son Caesar, the future host of the Hunger Games.
Trivia: The actor playing new IMF agent "India Zulu 254" is Alex James-Phelps - possibly a deliberate casting choice given a main character in the series and original film is called Jim Phelps.
Trivia: Robert Downey Jr. declared this was "the best film I've ever been in" at the UK premiere.
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