num_pages: 139
description: Uncovering the mystery behind Katherine Pierce is a real workout.The Unicorns have won a month-long membership at the hottest health club in town! The club is renowned for its diet-and-exercise program, led by spokesmodel Katherine Pierce.  Katherine is gorgeous, graceful, and adored by teenagers across the country.  Jessica, Lila, Mandy, and Rachel are looking forward to getting in shape and meeting the famous Katherine.  But if Katherine's so lucky, why does she look so miserable?
language: English
title: The Most Beautiful Girl in the World
titlecomplete: The Most Beautiful Girl in the World (The Unicorn Club, #19)
genres: Childrens
ratings_count: 48
series: The Unicorn Club
publisher: Sweet Valley