[1/2] Margot Robbie poses on the pink carpet for the world premiere of the film "Barbie" in Los Angeles, California, U.S., July 9, 2023. REUTERS/Mike Blake /File PhotoLOS ANGELES, July 21 (Reuters) - Film fans headed to cinemas in Los Angeles for early screenings of frothy comedy "Barbie" and nuclear arms biopic "Oppenheimer" - a double feature billed as "Barbenheimer." "Barbie" stars Margot Robbie as the Mattel doll, who is living her idyllic life in Barbie World, until one day she starts having dark thoughts and flat feet. Many of the fans coming to see "Barbie" dressed up in pink and posed for pictures in a makeshift Barbie toy box. Reporting by Omar Younis and Rollo Ross in Los Angeles; Editing by Mary Milliken and Jonathan OatisOur Standards: The Thomson Reuters Trust Principles.

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Persons: Margot Robbie, Mike Blake, Oppenheimer, Joey Litvak, Barbie, Mattel, Christopher Nolan, Cillian Murphy, J, Robert Oppenheimer, Jackie Brenneman, Cage, Claudia Ripper, Brenneman, Omar Younis, Rollo Ross, Mary Milliken, Jonathan Oatis Organizations: REUTERS, Hollywood, National Association of Theatre, Thomson Locations: Los Angeles , California, U.S, Los Angeles, LA