Question: Who was the actress that played in "Descendants"-(2015 American fantasy TV film) as well as played dual roles as both title characters on Disney Channel's "Liv & Maddie" ?
Sentence (from "Descendants (2015 film)"): The film follows these teenagers adjusting to life outside their island prison, while on a mission to steal the Fairy Godmother's wand and free their parents from captivity.
Relevant evidence: No