Pierre and Nicole are in a hotel elevator approaching the 8th floor, Pierre is on the right side. The following shot from outside the elevator shows Pierre on the opposite side.
When Pierre is about to slip Nicole's phone number into his wallet, the close-up of the wallet has a different background (desk with white paper) than the previous medium shot.
Nicole changes out of her jeans at Pierre's request and we see her in her new outfit, but by the time they arrive at the hotel her blouse has also changed.