Throughout the movie, 12 yr old girls wear very mature clothing which could seem inappropriate to certain parents of viewers.
There is a scene near the beginning of the film where a girl is seen walking out of her house with a sweatsuit. When out of view of her house, she takes off the sweatsuit, revealing a more dressed up outfit: A flowy yellow top (which does not have sleeves) a gray fingertip length skirt, and black boots.
The outfit looks too 'grown up' for the 7th grader, as it makes her look like a buisness-women.