At the end of the movie, during the last part of the Model UN competition, watch the redheaded girl's hair (I think her name is Rachel). Her hair keeps on changing. First when the team finds out that Chloe is "sick" her hair is pinned on her left side with two mini claws. Then when Riley goes up and receives her question it quickly cuts to her team where it is obvious that Rachel+'s hair is now pinned on the other side. And before she answers they show a shot of just Rachel so and her hair is still on her right side. Then when she holds up the trophy her hair is back to being pinned on the other side and the clips are not as close (although that probably was just because they slipped down). Then in the overhead shot the clips are once again on the other side. I caught this the first time I watched the movie.