Continuity mistake: As Princess Mia is coming down the aisle of the church, she starts to hesitate about three rows from the back. As we see her from the front of the church, she is very near the back when she stops to address everyone. But as she hands her bridal bouquet to the gentleman, he is close to halfway down the aisle and we can see a woman in a pink hat next to (behind) him and a woman in a lavender hat right behind her (who is then right behind the bridal bouquet man). Behind them, down the aisle towards the back, is a woman in a blue hat and farther back is a woman in a pink hat. But the next shot is a long shot from the front and the man holding the bridal bouquet is very near the back and there are not enough rows to hold the women in all the different colored hats.Sheri Hartman
Other mistake: The engagement ring that Mia gets at the beginning is larger than the one she gives back to him at the wedding.
Continuity mistake: When Princess Mia is eating ice cream in the kitchen, a blob of ice cream appears on the left corner of her mouth for one shot, then disappears.
Continuity mistake: When Princess Mia goes to hold her baby brother Trevor, her mom has him wrapped up with the covers over his head; we can't see his head. When Princess Mia takes him from her mother his head is still covered. But in the next shot, as she turns around toward the camera, his head is uncovered and has a white knit cap on it. But then after they take a few steps and her mother talks to her, his head is covered back up.Sheri Hartman
Continuity mistake: When Princess Mia is climbing down "vine" to meet Nicholas, we see SG Lionel and SG Shades playing chess with a monitor showing video feeds from security cameras. The one that shows Princess Mia has her higher than the window she is supposed to be climbing out of (there isn't one higher), the window isn't open like it showed in previous shots and she has on a huge white garment of some type that is past her feet (Princess Mia's sweater is gray and comes to her knees). Obviously, the picture we see on the security guards' monitor is not the same one that Princess Mia is shown to have climbed out.Sheri Hartman
Continuity mistake: When Princess Mia and Nicholas duck into a closet to finish discussing the "lie-dance," we see Nicholas reach across to turn off the closet light. As he touches the light switch, we see he has a wristwatch on. But the very next shot is a close-up of him actually twisting the switch, and either he has no watch on or it is now under the sleeve. (00:33:50)Sheri Hartman
Continuity mistake: During the parade, Joe in seen riding on the back of the carriage that Queen Clarisse and Princess Mia are riding in. When Princess Mia stops the carriage, Joe gets off the back and is down on the street. We see several shots of Joe down on the pavement watching Princess Mia as she is talking to the orphans. As Princess Mia is telling them how to be a princess, you can see Joe in the background and he is up on the back of the carriage again. As the drum roll is announced, we see Joe get back up on the carriage, again.Sheri Hartman
Continuity mistake: In the scene where Nicholas is telling his uncle that he was wrong, that Princess Mia has found a suitable husband within a week, the scene shows Viscount Mabrey pulling down his vest and then adjusting his tie with his left hand. His hand is still up on his tie when the shot switches to Nicholas saying, "a husband within a week." The shot switches immediately back to Mabrey and his left hand is down to his side and not even visible. Don't think he could be in that pose so quickly.Sheri Hartman
Revealing mistake: It is quite noticeable that during the party, the "rising star of opera" is lip-synching. Her posture and mouth movements are not like that of an actual opera singer, and there are no visible vibrations of her throat when she sings.
Continuity mistake: When Princess Mia is seeing her suite for the first time, we see her "closet" and in the middle is a red/orange tufted ottoman that has nothing on it. There is a second shot of the ottoman and there is nothing on it. But then we see Fat Louie on the ottoman pressing a second remote to open/close drawers.Sheri Hartman
Continuity mistake: When Mia is with that prince using arrows, her elbow is way high up. When the prince runs his hand over her arm, it is straight, then in the next shot it is high up again.