Continuity mistake: When the movie begins, Mal's hair swaps between being dark and light purple.
Continuity mistake: When Bev is saying that Bill has a contractual right to do the best Christmas show he can, Dimitri is using a hair roller on his left shoulder. The camera cuts to a different angle and suddenly he's rolling it on his right shoulder.
Continuity mistake: After the shooting at the concert, Lysistrata is in the bathroom downing the pill with some Don Julio tequila. The bottle lid is to the left of the bottle in the wide angles, to the right in close-up. (00:10:00)