Maya (played by Ariana DeBose) asks Christina (played by Evan Rachel Woods) to help her choose between white or black pumps. Fans of the show might recognize this moment because it's similar to when William had to pick between wearing a white or black hat when he boarded the train to Westworld in season one.
In season one, William chooses a black hat, which is how he eventually becomes The Man in Black, while in the season four premiere, Christina tells Maya to go with the white pumps.
"It registers something in Christina in a way, like, 'I've been through this before.' It gives the story even more layers. The point is for the audience to remember the moment because it makes it more interesting," the show's costume designer, Debra Beebe, told Insider.