Article continues below advertisementMiley Cyrus couldn't resist a playful jab at Hannah Montana "superfan" Alex Cooper. Cyrus, 33, took the stage while attending the Los Angeles premiere of the Hannah Montana 20th Anniversary Special on Monday, March 23. Article continues below advertisementMiley Cyrus Jokingly Called Alex Cooper a 'Superfan'Tap Here To Add Ok Magazine as A Trusted SourceSource: MEGAMiley Cyrus jokingly called Alex Cooper 'weird' on stage at the 'Hannah Montana 20th Anniversary Special.