Continuity mistake: Just after showing Bella his room, Edward takes her up into the tall tree to see the view. In the close-up shot, the tree they are in has a different shape to its trunk and limbs and is actually a different tree type from the one that is shown when the scene cuts to a aerial long-shot and pans away.
Continuity mistake: When James, Victoria and Laurent arrive at the baseball game, in the first shot of their arrival Laurent has his dreadlocks hanging over both of his shoulder. In the very next shot dreadlocks are only hanging over his right shoulder, and then back to both shoulders in the next. (01:18:50)
Continuity mistake: Victoria is making prints to throw off the cops...she's using sandals but the print is of a bare foot.
Suggested correction: She was barefoot, what sandals?
Continuity mistake: The scene after Mike confronts Bella about dating Edward, in the diner, the table next to Charlie has what looks like only two people. But then after Cora the waitress shifts, four guys are looking at Charlie. (01:08:30)
Continuity mistake: When Edward and Bella are talking by the cliff, its raining and they are both soaked. Next scene shows them completely dry. It's not different days considering they have the same clothes on.
Suggested correction: When Edward is soaked, he is wearing a dark jacket, when he is dry, he has a light grey jacket, totally different.
Continuity mistake: On the field trip in the greenhouse Bella has no jacket and is not holding one. When she's outside going to the bus she has a jacket on. (00:27:50 - 00:28:25)
Continuity mistake: In the prom scene just after Edward and Bella arrive, Bella motions to Jess, who is on a raised area with Mike, away from the dance floor. Bella then turns to wave at Eric and Angela. The shot focuses on them and then cuts back to Bella and Edward. In this shot, Jess can now suddenly be seen dancing behind them.