Near the end, when Carrie is talking to Mike on the beach, her hair alternates between crossing her face from the right or being tucked behind her right ear, depending on whether the camera angle is from her front or right side.
The beach scene about 50 minutes in, Carrie is talking to Mike. A couple walks by in the background (woman has lime green shorts and a white bikini top). A few seconds later, the same couple is shown again in the same background walking by in the same direction as the first shot.