She was difficult to work with

Once she achieved success, Marilyn Monroe was very pleasant to collaborate with. Monroe was unpredictable, according to those with whom she worked closely. She would be late for shots and have her lines forgotten. Everyone was made to wait for Monroe. Her emotional state was also considered as contributing to her recent erratic behavior.

Collaboration was a different story. Curtis said, "She was extremely, very difficult." She and everyone around her suffered as a result of her terrible inner madnesses. Billy Wilder, who directed Some Like It Hot, even called Monroe "a mean 7-year-old girl" in his film.

The productions lost thousands of dollars as a result of her constant absenteeism and tardiness. As a result, she was let go of this film. She never made it to another set since she continued to act in the same way. In front of the camera, Monroe would stutter and mumble her lines. Marilyn Monroe's stutter returned while she was filming her final film, Something's Got to Give, making it extremely challenging for the actress to speak her lines. Despite her success in Hollywood, Monroe struggled with insecurity and felt exposed. Without her acting coach's approval, she was unable to move forward with her acting job.