"Sisterhood of the Traveling Pants" is a novel by Ann Brashares that follows four teenage girls—Lena, Tibby, Bridget, and Carmen—who share a special pair of jeans. The pants magically fit each girl perfectly, despite their different body types, symbolizing their unique bond and friendship. As the girls embark on separate summer adventures, they send the jeans back and forth, sharing their experiences and supporting each other through challenges. The story explores themes of friendship, growth, and the transition from adolescence to adulthood, highlighting the importance of connection and understanding among friends.