Continuity mistake: When the Polaroid photo is shown of Betty and Walter with his boss and his wife, Betty's hands are behind Walter and the boss's wife's back. When it was taken, her left arm was out and her hand was on her own leg.
Continuity mistake: When Mark is unwrapping Wilhelmina's gift from Ted, the red ribbon appears and disappears as the camera angle changes.
The Lyin', the Watch and the Wardrobe - S1-E5
Continuity mistake: Betty's antennae on her butterfly costume change their position several times from shot to shot.
Continuity mistake: The amount of snow on Betty's head after Henry Bumps into her varies from shot to shot.
Continuity mistake: When Daniel puts the music box on the sleigh, he puts it on facing straight to the front of the sleigh, when the shot changes it is on an angle.
