Continuity mistake: In one of the deleted scenes for this episode, Carrie has to take her laptop out of her purse in order to make room for the garment. She throws the laptop on the bed, with the 'Apple' symbol facing down. But just after that, the laptop is shown lying on the bed with the 'Apple' symbol facing up. To my knowledge, there is no 'Apple' logo on the bottom of the laptop.
Continuity mistake: When Carrie enters the Dior store from the rain, she slips and falls. When she first starts falling, her arms are outstretched widely above her head. But the very next shot suddenly shows her hitting the floor, with her arms down in front of her to break the fall. There was no time for her to have moved her arms that quickly. (00:20:15)