At the Venice Film Festival last year, Kim revealed she was 'a little concerned' about the film. 'I have to speak about the movie that's going to be made about the Sammy Davis relationship,' she told the audience of a masterclass, before explaining her issue with Sydney. 'I think actors have a wonderful place to do whatever, but in my case, I'm not an actress, I'm a re-actress. So therefore, I'd like to see somebody playing that role that is more of a re-actor than an actor.'

In an interview with The Hollywood Reporter last year, Sydney, who is also a producer on the film, was asked if she had met the actress she was going to play on screen, but she dodged the question and instead said, 'Colman and her have a very beautiful relationship. They've been talking. We connected them, so it's been great.' Speaking to People around the same time, the actress said she was 'incredibly honored' to play Kim. 'I think her story is still very relevant today in that she dealt with Hollywood and scrutiny with her relationships and her own private life and the control of her image. And I think that for me, I relate to her in a lot of different ways,' she stated.