In the supermarket, Paris and Nicole's shopping cart is alternately full, then empty, then full again.
When Paris parks the car outside Nicole's house at the beginning of the episode, she looks to the right when she calls to Nicole. However, in the next shot, the car is facing in the opposite direction and Nicole appears on the left.
The airplane seen taking off from the airport is a jumbo jet and not the private plane which Paris and Nicole are inside in the next scene.