Continuity mistake: When Cristal and Zach go to the Club Cheetah to watch Nomi dance, Nomi comes out on stage wearing black lace-up heels. Then when she storms off the stage, apparently upset by Cristal's presence at the club, she's wearing Mary Jane-style heels. Then when she's giving Zach the private dance with Cristal watching, she's wearing the lace-up heels again.
Continuity mistake: When Nomi is initially talking to Andrew Carver and they are both full length in the scene, there is a large amount of space between them. In the next scene, which is close up, Nomi is inches away from Andrew's face. When she introduces Molly, they are far apart again.
Continuity mistake: When Nomi is in the hitched car, her thumb on the knife appears and disappears randomly.
Answer: Paul Verhoeven subtly encouraged a rivalry between the two actresses in order to make the characters' dislike appear more real on screen.
LorgSkyegon