“You can’t sit with us,” is what members of the A-list high school clique scoffed at unfashionable girls vying for a seat at their lunch table.

Ten years later, we look back at the Plastic’s strict and very detailed dress code, enforced by queen bee, Regina George (Rachel McAdams).

First things first, on Wednesdays the Plastics (Lindsay Lohan, Amanda Seyfried, Lacey Chabert and Rachel McAdams) wore pink and there was no exception to the rule.

Because in high school, pleated and plaid skirts were the social norm.

Well, what else were they going to wear?

Karen (Amanda Seyfried) pushed simplicity to the limit when she went as a mouse on Halloween, with her mouse ears.

Reality set in when a larger Regina (Rachel McAdams) could not fit into that teeny pink dress. She should try Sears.

Who could forget Mrs. George (Amy Poehler) always dishing out the jewels of life in her pink velour tracksuit?

Gretchen (Lacy Chabert) cried so hard for those expensive gold hoops Regina forced her not to wear.