When Cady sits with the Plastics for the first time, Karen tells her that they wear pink on Wednesdays. On Wednesday, Cady shows up with a pink shirt and Gretchen is explaining to Cady all the rules. Two of them that she mentions are: 1) We only wear jeans on Fridays and 2) We only wear our hair in a ponytail once a week. Cady's outfit breaks both these rules! One, she is wearing jeans on Wednesday and second, she wore her hair in a ponytail the day before, which means that it was in the same week! CADY HOW COULD YOU!!