Blair's roommates at Princess Charm School's names are Hadley and Isla, which happen to be the names of Genevieve's (12 Dancing Princesses) younger twin sisters. Also Hadley in both movies wore a blue outfit and Isla wore a purple out fit.
When the Charm School ladies and the boys from the Prince Charming Academy dance, it is the same dance from A Knight's Tale.
Many students at Princess Charm School are from different countries/counterparts of countries: Hadley is from Latin America, Isla is from Sakurako (a Japan counterpart), Josette is from Zinnia (an Africa counterpart), Portia is from Narcissia (a Scotland counterpart), and Miranda is from the US state of Philadelphia.
When Blair, Hadley, and Isla are in the vault Blair picks up the nutcracker from "Barbie in the Nutcracker" (2001)
In an attempt to heal the nation, on February 14, 2021, podcast hosts Richard Martin and Alexander "AJ" Jones of the Cult Popture Podcast released an 18+ hour comprehensive podcast reviewing the 37 Barbie films. The retrospective took over a month to prepare and features numerous guest speakers as well as an original song created specially for the podcast.