Continuity mistake: After receiving the phone call from Nancy, when Robert and Morgan are talking in the taxi, his seatbelt repeatedly changes from over to under his trench coat collar. (00:16:45)
Continuity mistake: Before the school bell rings, Jason asks Ms. Darbus for her favorite summer memory. When everyone turns to look at him in the shot from the front of the class, there is a book under Troy's desk, which is not there in the previous or following shots. (00:01:25)
Continuity mistake: After April's father tells her about DJ's record, she goes to the frat house to see him. As she is walking up the sidewalk, she is empty handed and no purse is on either shoulder. Then, when she comes in the door she's holding a purse.
Continuity mistake: While Sweeney is upstairs with Pirelli, Mrs. Lovett gives Toby a meatpie downstairs. On a closeup, half the pie is gone, but when the shot widens right after, only a couple nibbles are gone from the cake.
Continuity mistake: During the scene with the picture of the teacher with breasts. Link's and Amber's seats move. Link's seat is behind the desk and then its in front moving Amber's seat over towards the center of the desk.
Continuity mistake: Near the end, when Lucy tries to get into the building, she is blocked by police officers holding clubs straight ahead in front of them. The scene cuts to a roof shot, then back again, and Lucy tries again, but the clubs are missing, the cops just have their hands out in front of them.
Continuity mistake: Throughout the movie, Cinderella's hair goes from loose to being tied into a ponytail.