Greta Gerwig's "Barbie" and Christopher Nolan's "Oppenheimer" were released on July 21. Cillian Murphy told Margot Robbie that Nolan was "determined" to have a summer release. Advertisement"Barbie" star Margot Robbie and "Oppenheimer" actor Cillian Murphy discussed the pop-culture phenomenon known as "Barbenheimer," and explained how filmmaker Christopher Nolan's superstition influenced the release date of his movie. Cillian Murphy as J. Robert Oppenheimer in "Oppenheimer." Advertisement"That was a good instinct," Murphy told Robbie.

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Persons: Greta Gerwig's, Christopher Nolan's, Oppenheimer, Cillian Murphy, Margot Robbie, Nolan, Murphy, —, Robbie, Barbie, Robert Oppenheimer, Nolan's, Christopher Nolan, J, Christian Bale, Long, Mia, Jason Guerrasio, Nolan wasn't, Warner, Jaap Buitendijk, Chuck Roven, Roven Organizations: Service, Universal, San Francisco, Warner Bros Locations: Dunkirk