Corrected entry: At the beginning of the movie, they are riding in the Volvo, and Tess tells Anna to fix her shirt. But later in the movie, when they are switched,Tess discovers that Anna pierced her navel a while back. How could Tess not see the piercing when Anna's navel was showing? And why would she not say something?
Corrected entry: Lindsay Lohan's door was taken off of her room at the beginning of the movie, before she gets home from school. Later on, there are shots with the door still on, but when she and her mom have switched places and they are getting ready for the rehearsal dinner, they both comment on how the door is no longer there. It somehow magically appears and disappears between scenes.
Correction: Anna's door was only taken from her room AFTER her mother got the phone call from the principal, informing her of Anna's misbehavior. This is AFTER she gets home from school, NOT BEFORE. And, furthermore, the door STAYS off for the remainder of the film.
Not true because you can see the door still there the morning after they switched.
Corrected entry: When Evan and Tess (still herself) are in their session at the beginning of the movie Evan starts by saying he's had a good week. Later, when Tess (in Anna) and Ann (in Tess) are talking after they've woken up and noticed the switch, Tess (in Anna) mentions that Evan is her neediest patient, and that she's seen him everyday for the last couple years. Evan wouldn't start talking about the beginning of the week, Tess already knows.
Correction: Maybe since Evan is nervous and probably has mental issues he wanted to say something so he started a casual "I've been having a good week so far."
Correction: Just because she pierced her navel does not mean she always wears a belly button ring. She probably knew her mother would freak and was smart to take off the navel ring.