In this scene, costumes have been used simply to represent the casual everyday clothes of the characters. However, they do reveal elements of their personalities to the audience. Sam’s costume is a bright blue dress and white cardigan – symbolic of her fun character and efforts to turn from her reputation. Patrick wears black pants and a loud ‘retro’ shirt, somewhat reflecting his outrageousness and charm. Charlie is costumed in a simple T-shirt and hoodie with jeans. Being such a complex character, the costume is a contrast to the struggles he continues to cope with. It does however symbolise his sometimes shy and quiet personality.
The Perks of Being a Wallflower - Film Analysis 