Lady Brett Ashley is a central character in Ernest Hemingway's novel, "The Sun Also Rises." She is an Englishwoman known for her beauty, charm, and independence. Brett is a modern woman of the 1920s, navigating the complexities of love and relationships in a post-World War I society. Brett's relationships with men, including Jake Barnes, reveal her struggles with commitment and emotional fulfillment. Despite her allure, she often feels trapped by societal expectations and her own desires. Her character embodies the themes of disillusionment and the search for identity in a changing world.