Continuity mistake: At the beginning of the movie when Tammy's boss is firing her, the clip on his tie keeps switching back and forth from being crooked or straight.
Continuity mistake: When Tammi's boss is firing her, behind him is the file cabinet. Every time they pan over to him the file cabinet is open, then closed, and there's different files every time.
Continuity mistake: When Tammy tries to drive through the trees and gets stuck, in one shot she drives through so the tree is up next to the side mirror past the wheel-well. But in the next shot, the car has moved back and the tree is next to the wheel-well, without her reversing.
Continuity mistake: When Tammy and Pearl are in the riverside park singing Midnight Rider, a boat passes slowly behind them towards the left of the screen. In one quick shot, the view of the boat is blocked by Tammy, but then the boat never reappears in the scene and the wake has disappeared, with no time for the boat to have moved completely offscreen.