The 26th release in the computer-animated Barbie film series is Barbie: The Princess & The Popstar. Kelly Sheridan provides the voice of Barbie, aka Tori, princess of the magical kingdom of Meribella.
The kind-hearted Princess Tori has plenty of responsibilities related to her royal lineage, but she would much rather sing and dance than tend to her duties. When she meets her idol, the pop star Keira, the two become fast friends. They also discover a magical secret that transforms them into carbon copies of each other. This bit of magic allows them to exchange roles, leading to some hilarious unintended situations.
The magical secret falls into the hands of Crider and Rupert, two evil men determined to use it for unscrupulous means, leading Tori and Keira to become sleuths in order to save the Kingdom of Meribella from extinction.