Corrected entry: When Mia and Lilly are discussing in private behind the tree, Lilly takes a few steps backwards and says "Shut up!", but in the next shot we see Mia and Lilly and the tree is nowhere to be seen.
Corrected entry: When Mia is sitting with Jeremiah, Lana says "Sunglasses, girls!" and she and the other two girls put on their glasses. But when Lana stands up and faces Mia, her glasses have disappeared.
Corrected entry: When Lana, Anna and Fontana are in their cheerleader outfits and performing "Grove Lions", look at the back and you can see a girl who is obviously not used to cheerleading. When the rest of the girls twirl round she can't twirl, and at the end when they all say "Go Lions!" her back has turned and she has to turn round to join in with the rest of the group.
Corrected entry: In the scene where Mia goes to her grandma's place for the first time, when she is walking to the couch you can see that necklace case is on the table, then when Charlotte walks into the room she is holding it in her hand.
Corrected entry: When Mia goes to visit her Grandmother for the first time, the security monitor shows her walking across the yard however at this stage she is about to enter the front door.
Corrected entry: After Mia and the Queen play arcade games, Mia goes outside to eat a corn dog. Mia puts mustard on the corn dog and takes a big bite. A moment later, she offers the Queen a bite. When the corn dog is passed to the Queen, it is a new corn dog without bites taken.
Corrected entry: If Michael was open to talk to Mia about why she dumped him to go out with Josh, why couldn't he have told his own sister? Is there relationship that bad? Telling her would have prevented Lilly from being put on the spot by Mia not showing up for the TV interview.
Corrected entry: In the scene where Mia has to hit the ball to pass gym class, the first ball that she hits is foul and the vice principal says, "It's just a ball not a snake", the words don't match up with her mouth.
Corrected entry: When Mia and her mom and her grandmother are talking in their kitchen after Mia has found out about her royalty, she says something like "What's next? Are you going to tell me I have a twin who's a duchess?" Then her grandmother responds with "No, but you have a cousin who is a Contessa, fondly known as Bartholomew. But, actually we call him Pookie." A Contessa is Italian for a countess-a female count, so what she should have said is "No but you have a cousin who is a count...."
Corrected entry: Ignoring the common mistakes in geography for any movie filmed in San Francisco, there is a shot of a helicopter flying away from the beach party with an island and Palm Tree in the ocean in the back ground. There is nowhere along the coast of San Francisco where an island is visible. (01:17:00)
Corrected entry: At the end of the ball when everyone is dancing, you see the band in the background playing their instruments. Even though they're going along with the pop music being played, they're playing instruments that don't exist in the song.
Corrected entry: When Mia is at the basketball court, talking with her friend, she slips and falls off one of the bleachers. This is the actress's mistake, she really does slip, you can tell by her immediate change of tone in her voice. Confirmed on DVD.
Corrected entry: If Mia's such a goody two shoes and teacher's pet, then how come all the teachers don't know her name? They think that she's invisible and call her "Lily's Friend".
Corrected entry: At the beginning of the movie, when Mia slides to the first floor she isn't wearing glasses, but when she is handed the garbage by her Mom she is.
Corrected entry: When Mia finds out that she is a princess and asks her mother why she never told her, her mother says that Mia's father and herself were planning on telling her when she turned 18. But later in the film, when it's Mia's 16th Birthday, Mia receives a diary from her father and a letter he wrote before he died. In the letter he tells her that today, her 16th Birthday, is an important day where she has a big decision to make(whether to become a the princess or not). But weren't they planning on telling her when she turned 18?
Corrected entry: In the scene where Mia's mother and Grandmother are in their homes watching Lilly's show, Mia's mother looked shocked when Mia never showed up for the show but she knew full well Mia was going to the Baker Beach Bash.
Corrected entry: Before the ball when Mia is talking to her grandmother, she takes off her slippers to do yoga. In the next shot you she Mia briefly lift up her leg and she is still wearing her slippers.
Corrected entry: I don't know if you noticed, but it is said many times that Mia is only 15, if that IS true, why is she driving?
Corrected entry: I guess only somebody with curly hair would notice this, but in the beginning of the movie before her makeover, the character Amelia has what appears to be naturally bushy, frizzy, curly hair. Later in the movie, when she is racing to get to the ball in time, she's sitting in the pouring rain soaked from head to toe. If your naturally curly hair is straightened, it will get curly again when it's wet. Her hair is still straight.