Goofs

Mrs. Andrews' hand positions when she is hang-gliding. Also, in some shots, she is in a harness, but couldn't have gotten into it in the air.

At the park when Ben and his mother have their chat, in one shot he's reaching into the open box of crackers while talking. In the next shot when it cuts back to him, he is no longer holding the box and it appears unopened on the picnic table.

After the close-ups of the car chase in the drainage culvert, not only does the prop ramp disappear, but the long shot reveals an utterly different bridge in the background.

When Annabel pour the pennies from her sock on the bus, they land behind her. After she crawls down to get the pennies from the walkway and stands back up, the pennies behind her are gone.

When Annabel and her mother realize they have switched bodies, the closeup on Mrs. Andrews reveals her watch which reads 12:10. The switch happened before Annabel arrives at school so it should be much earlier in the day.

Obvious smiling stunt double for Ellen during the water skiing scene.

In long shots of Annabel driving the Volkswagen, it is clearly a stunt double, and not Jodie Foster.

Annabel's friend Virginia remarks that Annabel has the same rum-raisin banana split for breakfast daily, so if they regularly meet at the diner for breakfast and ride the public bus to school, Annabel would also have a bus pass, like her friends.

After Annabel and Ellen switch bodies, Ellen (as Annabel) calls Bill. When he asks her if it's Annabel, she replies, "Yes and no." At the end of the film (after they have switched back), Bill asks Annabel a question, to which she answers, "Yes and no." Bill tells her that she sounds just like her mother. Although it was Ellen on the phone with Bill who said those words, Bill did not know that, and therefore would think that Annabel said it both times.

In the diner where Virginia and Annabel are eating breakfast, Annabel says, "I can't eat what I want, wear what I want ..." and tosses a spoonful of ice cream at a large mirror behind the counter. You can see in the mirror that Annabel's lips aren't moving while this line is being said.

During the police chase, there is a camera dolly mounted on the driver's side of the red VW Beetle; visible during the tracking shot of them passing through the traffic cones.

During the police chase, when the fired maid does a wheelie in traffic; a spinning prop assembly can clearly be seen in use, in one of the wide shots of the scene.

At the beginning of the film, Annabel says that she is watching her weight. If this were true, she would not be in the habit of eating banana splits for breakfast.