The Oscar winner plays actress-turned-princess Grace Kelly in the biopic, which premiered at the Cannes Film Festival in France earlier this month to scathing reviews.
Critics branded the movie "dull" and "stiff", and it was also slammed by members of the Monaco royal family, who were unhappy with the portrayal of their mother.
However, Kidman insists the film's failure to impress is not her fault, telling Britain's Seven magazine, "As much as people go, 'Oh, the actor is totally responsible', the actor doesn't go into the editing room. I wasn't producing the film. I wasn't directing it and I don't have control over any of it. You literally do the performance and then you leave and you are told, 'Okay, come here to help promote the movie'. That's what I did."