Margot Robbie and Cillian Murphy, the stars of Barbie and Oppenheimer, have appeared in the latest episode of Variety’s Actors on Actors.Robbie admitted that she initially feared that Mattel would reject the Barbie movie after reading the script written by Greta Gerwig and Noah Baumbach.The actress and producer revealed that one of Oppenheimer’s producers suggested that Barbie should have moved its release date, which she refused to do.Barbie and Oppenheimer conquered the summer box office as the unexpected Barbenheimer phenomenon set the imaginations of film fans racing. Now, the stars of eac…