Vivian Sternwood is a fictional character from the novel "The Big Sleep," written by Raymond Chandler. She is the daughter of the wealthy Sternwood family and is portrayed as a complex and troubled woman. Vivian is known for her beauty and sharp wit, but she also struggles with personal issues, including her relationships and a troubled past. In the story, Vivian plays a significant role in the investigation led by private detective Philip Marlowe. Her character embodies themes of deception and moral ambiguity, reflecting the darker aspects of the world around her. Vivian's interactions with Marlowe reveal her layered personality and the challenges she faces within her privileged life.