Continuity: Before Regina starts writing the nasty things about herself in the "Burn Book", there is a red pen on the floor near the book. The next shot in a closeup of the book the pen has now moved to being right next to the book. Submitted by Lummie

Continuity: Just before Regina gets run over by the bus, watch her hair. It changes from on her shoulder to behind her neck between shots.

Continuity: In the winter talent show scene, you see Gretchen go to kick the boom box in hopes of fixing the skipping CD, but when she kicks it you see it start to just fall off the stage. Yet in the next shot the CD player shoots forward and hits Gretchen's boyfriend, as if she had kicked it a lot harder than she actually did.

Continuity: In the scene near the end of the movie where Janis is dancing with K.G., After Janis tells him that she's Lebanese, she smiles. The next shot, she's not smiling.

Continuity: As Regina is about to write the things about herself in the Burn Book, as she flips to a new page we can briefly see the page about Miss Norbury on it, and it doesn't say "Ms Norbury is a pusher. A sad old drug pusher," but later on when Miss Norbury picks up a photocopied sheet of the same page, it does have the previous comments written in. Submitted by Hamster

Continuity: When in Regina's bedroom, Regina takes off her pink cardigan, and puts it on a couch, just before the Plastics examine themselves in the mirror. When Regina's mum brings in drinks for them though, the top is positioned much differently. Submitted by Hamster

Continuity: In the scene where Cady is starting her first day of school and her parents are saying goodbye, she starts to walk up to the high school. Her dad starts to walk away while her mom stays standing there. In the next shot where it shows Cady's face, her mom and dad are still watching her together.

Continuity: When Cady is at the Halloween party her face is painted white/gray. when she comes through the door to see Damian and Janis her face has changed from white/gray to a more green.

Continuity: Between the first two shots of sex-ed on the second day of school, a key hanging around the coach's neck goes from hanging out of his tracksuit, to inside his tracksuit.

Factual error: At the mathlete competition, when the host is asking a question he says, "All of the digits are odd," yet when the boy yells out the answer, he says 741. Four is not an odd number.

Continuity: When Regina is being carried by some boys on the field, her "R" necklace is hanging out of her blue P.E. shirt. When they put her down it is tucked under her shirt, then when she blows a kiss it is back out again. Submitted by Hamster

Continuity: In the wake of the candy-cane grams, Gretchen's arms change from above her shoulders to on the desk.

Continuity: When Regina is by her car after Cady's party, Regina says something about the Caltine bars and her boyfriend says that they are for weight gain. Regina spits it out and at one point you can see her boyfriend putting his cup up to his lips, then the shot changes to the other side of the car and his arms are down straight.

Continuity: At the beginning of the second day of school, Janis jumps from toying with a pencil below her waist to above her shoulder.

Continuity: When the Plastics spot Gretchen's crush, between shots Gretchen goes from having her arm by her side, to playing with her necklace. Submitted by Hamster

Continuity: In the scene where the Plastics are at the mall and they spot Gretchen's crush with another girl, in one shot, Karen is playing with her watch, in the next shot her arms are folded.

Continuity: At the Halloween party, Karen tilts her head as she ponders cousin relationships, but in the next shot she's upright again.

Continuity: When Mr. Duvall takes the mic after Cady's speech at the Spring Fling, he steps with his left shoulder forward. In the next shot, his right shoulder is forward.

Continuity: In the scene where Regina is asking Cady about her home schooling, Regina's hair starts to fall over her shoulder, then the shot changes and it is back behind her shoulder.

Continuity: During the dance scene, the captain of the Mathletes goes up to Cady's friend that does the art and starts dancing with her. At first she's smiling, but the next shot shows her with a straight face.