Jason Earles said on an interview with Jimmy Fallon that Jackson was originally very introverted and shy, and that he was only able to talk through a puppet he carried with him everywhere. While rehearsing a scene, Earles did so well that the director was convinced to rethink the character.
Miley Cyrus originally auditioned for the role of Lily Truscott but they thought she would be better for the role of Chloe Stewart/Hannah Montana so she then auditioned for Hannah Montana and got the role.
Taylor Momsen and Miley Cyrus were up for the role of Hannah/Chloe Stewart, but Cyrus eventually got the role, and Momsen later went on to star as "Jenny Humphrey" in the hit CW show, Gossip Girl (2007).
In the episode in which Robbie Ray hurts his back doing the limbo, he says, "Ow, my achy, breaky back!" a reference to the popular 1990s country song "Achy Breaky Heart," which was sung by Billy Ray Cyrus.
In one episode, Miley told Lilly she named her pig Lou until they found out it was a girl and then changed it to Louanne. In another episode, she told Lilly that her pig was named after her evil cousin, Louanne, who tried to reveal Hannah's secret.