You are watching Barbie and the Diamond Castle the movie produced in Canada belongs with duration 78 Min in Category Animation,Family,. broadcast at streamingjoy.com , by [ Mattel ] ,[ Rainmaker Studios ] Liana and Alexa (Barbie and Teresa) are best friends who share everything, including their love of singing. Upon meeting a girl inside a mirror, the duo embark on a journey that will put their friendship to the ultimate test..