Character Costumes Initial Ideas

Megan (protagonist)

• Tight top showing off arms muscles but not chest
• Jeans for function
• Warm jumper for function
• Converse/trainers

Jess (flakey)

• Ugly (indie) jumper
• Nail design
• Heels
• Hair flower
• Thin fabric

Charlie (aggressive)

• Bright red top
• Grey waist-high pleated skirt
• Grey/black tights
• Thick belt around waist
• Military style boots which look superficially strong

Ali (intermediary)

• Child-like jumper
• 'Normal' clothes, block colours
• Pigtails

Explanation

Megan's clothing has to show that she is strong in both body and mind, thus why she is not effected by the mind control of the website. The t-shirt she wears will be functional, as will the jeans and jumper. This will show that she dresses in clothes for their functional not superficial reasons. 

Jess' clothing will be almost the polar opposite of Megan's because rather than being functional it will be clear that what Jess wears is chosen more for aesthetic reasons. She'll be wearing heels as they will make her look more fragile and ethereal, thin fabrics will add a floaty sense to her character. We will also have nail art and accessories to show the extent she cares about her appearance.

Charlie's costume will show that she wants to be a strong, in-control, character but that the strength that comes through from her clothing is more superficial than real. This will be shown through the military style boots that she'll wear, which appear to be strong themselves and give the appearance that the wearer is strong, when actually neither are as strong as they seem.
Ali's clothing will be block colours, a t-shirt, chinos and jumper. Her clothing will be typical to a teenager but she will be wearing pigtails will will show her childlike, vulnerable side. This will be important to her character because she'll be the character who doesn't know where her allegiances lie and will need help,  protection and emotional support from the other characters due to her emotional immaturity.