Barbie and the Diamond Castle (2008) is a Animation, Family film that follows liana and Alexa 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. Currently, you can watch Barbie and the Diamond Castle on Amazon Video, Apple TV Store, Google Play Movies, YouTube. Streaming availability may vary by country and platform over time. It has a user rating of 7.4 out of 10 from 879 votes. Fans of animation movies may also want to explore similar titles below.