28 November 2016 Last updated at 14:31 GMT
Sixteen-year-old actress Auli'i Cravalho is the voice of Moana. It's her first film and she told Newsround: "I'm living my dream."
The cast also includes Dwayne "The Rock" Johnson and X Factor judge Nicole Scherzinger.
Leah went to meet Auli'i to find out what's it's like acting only using your voice...
The animated movie Moana hits cinema screens this week, following the journey of a Polynesian teenager Moana on a quest across the Pacific Ocean to save her people.