Continuity mistake: At the start of the movie, when Barbara crosses the road from Grand Central Station to catch the taxi, there is a blue car parked in front of it. Then when the shot is shown from the rear of the taxi, the blue car is gone. When the shot moves back to the side view, the blue car is back there again. In addition when the shot is taken from the side of the taxi, there is no green fence visible, however, when the shot is from the rear of the taxi, there is a shoulder-high green tubular fence on the footpath.
Continuity mistake: In the scene where Ewan MacGregor is telling his workmate that he will make Renée Zellweger fall for him he is holding a drink in one hand and an olive on a stick in the other. As he speaks he is gesticulating with the olive, then he eats the olive, then it re-appears on the stick.
Continuity mistake: In the scene where Barbara and Vikki enter the Mahogany Room for the first time, when Barbara takes off her coat, she leaves her purse with the attendant and takes off her gloves as she walks towards the table. In the next shot, she no longer has the gloves but now she has her purse.