Continuity mistake: When Lizzie, Gordo, Miranda and Matt are sitting outside the studio and Matt tells them his Plan B, as Gordo says "Elf costumes? That's plan B?", the black bag strap over his left shoulder jumps from being under his collar to over his collar instantly between shots.
Continuity mistake: When Mrs. McGuire pulls up to the studio lot and the security guard leans down to the car window to talk to her, he is holding two red candy twists in his hands. With every shot change the position of his hands and which hands he holds the twists in changes.
Continuity mistake: When Lizzie, Miranda and Gordo are hiding in the big red sack on the Santa sleigh, after Lizzie pokes her head out she ducks back into the bag and says "Aaron Carter's here!" As the shot changes, the Christmas presents that surround them in the bag rearrange themselves instantly.
Continuity mistake: When Lizzie, Miranda and Gordo are in Aaron Carter's dressing room, when they realise that it is actually his dressing room, Lizzie places her tape recorder on the glass table quite near the edge. But in the next shot it is now halfway hanging off the edge.