MacKenzie Hollister is the main antagonist. She is the most popular girl at Westchester Country Day Middle School, the leader of the CCP (Cute, Cool & Popular) clique and the enemy of Nikki Maxwell. She is considered to be a stereotypical mean, sinister and vile girl. Nikki calls her "a pit bull in glittery eye shadow and Jimmy Choo flip-flops", along with various other insults, both in her diary and reality. She formerly attended North Hampton Hills International Academy, before moving back to