Claire Lyons is a fictional character from the popular book series The Clique by Lisi Harrison. She is introduced as a new girl at Octavian Country Day School and quickly becomes a central figure in the story. Claire is known for her intelligence, creativity, and strong sense of loyalty, often navigating the complexities of friendship and social dynamics among her peers. Throughout the series, Claire faces various challenges, including fitting in with the elite group known as the Pretty Committee. Her character development highlights themes of self-discovery, acceptance, and the importance of staying true to oneself in a competitive environment.