Torn Between Two Hannahs - S1-E17
Plot hole: When Lily leaves to go to the limo, Luanne dressed as Hannah stays behind and reveals that Miley is tied up. How can Miley have two identical outfits when it's obvious that all her clothes are one-of-a-kind?
Plot hole: Throughout the show everyone says that the TV show, in which Amber and Hannah are to be performing, is going to take place on Saturday night. It is mentioned three or four times. But, after the show, Amber enters the cafeteria and says, "Last night, I was on Singing With the Stars." If the show was on Saturday, they wouldn't have been at school the next day, which was Sunday.
You Gotta Not Fight for Your Right to Party - S2-E6
Plot hole: When Miley (as Hannah) gets stuck in the truck while trying to escape, she tells Jackson that her "belt's caught". But, when Jackson rescues her, it is visible that she is wearing no belt.
Answer: He falls and breaks the chair, landing on the deck.
Dedderbot ★