Factual error: At the mall scene when Regina calls Taylor's mom pretending to be a planned parenthood doctor she faints, then instantly calls Taylor right away after fainting. If she fainted then it would've taken longer to wake up and call her.
Continuity mistake: In the scene where Cady is chasing Damien's car and talking to Janis, when Janis says 'he still doesn't want you' two extras in dark clothing walk up a pathway behind Cady. However when the shot cuts back to her, they have totally vanished. Even though they were wearing dark clothing, you'd still be able to have seen them, and there was not enough time between the different shots for them to have walked into the house.Liam D