Clarissa is a smart, sarcastic and realistic teenage girl. Despite her rationalism, she often tends to exaggerate any problem she's facing. She was approximately 14 years old when the series began and was a 9th grader at Thomas Tupper Junior High. Clarissa is pretty and popular and generally well-liked by her classmates. Her interests include photography, journalism, and rock music. Though she is usually mild-mannered, she can be just as selfish and calculating as her younger brother Ferguson. Clarissa is best known for her unique teenybopper fashion sense, often colorful and mismatched.