by Leyla MohammedBuzzFeedBuzzFeed StaffAs a Celebrity Reporter, I cover everything from fashion and award shows to TV, film, and cultural conversations. Believe it or not, Hannah Montana is officially 20 years old! Tap to play GIF Tap to play GIF Disney Channel Marking the huge occasion, several members from the cast - including leading star Miley Cyrus - reunited this week at the premiere of Disney+'s Hannah Montana 20th Anniversary Special. (C)Disney Channel/Courtesy Everett Collection Of course, Miley played protagonist Miley Stewart, who led a double life as the titular pop star.