Barbie: Princess Charm School

Barbie plays Blair Willows, a lowly waitress, trying to get money for her sick adoptive mother. When her adoptive sister Emily placed her name in a lottery, Blair didn't expect to be a student at Princess Charm School, a school dedicated to teaching rich girls to be princesses and lady royals.

Blair decides to go into the school in hope of getting the status of lady royal to help her family. However, she is humiliated from time to time. When she realizes she might be the lost princess Sophia, Blair and her friends begin an adventure to get the Gardenia Crown.

Barbie: Princess Charm School was released direct-to-video in 2011.

Tropes used in Barbie: Princess Charm School include:

Abusive Parents - Dame Devin is a borderline example, calling her daughter "Useless Child". Dame Devin seems to be so domineering over her daughter that Delancy has no choice but to say yes. It's hinted that Dame Devin wants to live her dream as a princess through her daughter.
Air Vent Passageway:Subverted: only the fairy was small enough to crawl in, and she failed because of the ventilator at the end.
An Aesop - Confidence
Big Bad - Dame Devin
Blonde, Brunette, Redhead - Blair, Hadley and Isla respectively on the DVD cover despite Isla having black hair in the actual movie. Also, several official pictures feature Blair, Hadley, and a red-haired Delancy.
Blue Blood - Only rich girls can attend the school. "Commoners" can get in through a lottery and only once.
Cloudcuckoolander: Portia
Cool Big Sis - Blair to Emily
Contrived Coincidence - It just so happens that Delancy picked Blair's name and then the princess Sophia just turned up as a commoner, Blair Willows.
Cute Clumsy Girl - Blair is teased and humiliated relentlessly for it. To a lesser extent, her fairy.
Dance of Romance - Happens twice. One is at a class and the other at the end of the movie. Note that the scenes have different music playing.
Generation Xerox
- Queen Isabella looks exactly like her daughter, Blair Willows/Sophia when they were eighteen.
- Note that Dame Devin and her daughter Delancy looks so much alike. However, they have opposite views. While Dame Devin actually killed and ther own relatives and in-laws, Delancy realizes how much her own mother kept so much secrets from her. She initially believed that her mother is only trying to get rid of Blair because of her lack of.. well.. everything. When she overheard Blair and her friends' conversation about the legend and connecting it with the past, she tries to do what is right.
Happily Adopted - Blair embraces her family when she was crowned Princess. She loves her family so much she is willing to go to Princess Charm School just for the money needed for her mother and sister.
Hidden Depths - It's revealed that Delancy only wants to do what is right especially when she learns the truth.
Distaff Counterpart - Prince Charming Academy
Doorstep Baby - Blair or, in this case Princess Sophia, is found at Mrs. Willows' doorstep on the day of the car crash.
Everything's Better with Princesses - The premise
Everything's Better with Sparkles - The gowns at the end. Of course, it have be Merchandise-Driven.
Fish Out of Water - Blair doesn't exactly fit in the criteria of princess material.
Laser Hallway
Multinational Team: Blair and Delancy are ambiguously European, Hadley is Peruvian, and Isla is Japanese. For minor and side characters we have Scottish Portia, ambiguously European Lorraine, African Josette, and American Miranda.
Mythology Gag - Barbie Hadley and Isla (the twins from the Twelve Dancing Princesses) aren't the first princesses to be named.
Never Say "Die" - Averted frequently, except the time Dame Devin exclaims on live television that she 'eliminated' her own sister-in-law.
Reasonable Authority Figure - Headmistress Alexandra Privet
Royal Blood - Dame Devin, Delancy Devin, and Blair.
Shallow Love Interest - A staple of the films.
Spoiled Sweet - Delancy is much sweeter than you might think from her horrible mother.
Transformation Sequence - For no good reason at all, Blair transforms into Princess 'Sophia' just because.