Potter's Sister.

Alexandria Lillian Potter was only three when it happened. Of course, everybody forgot her. Even Lord Voldemort didn't know of her. Now, Lexi is in the world of magic, and her brother, Harry, the boy who lived, is right by her. Together, they will find away to defeat Voldemort. Even of love, secrets, and more stand in the way of them, Harry and Lexi will defeat their parents murders. This is the story of Potter's Sister.

I DONT OWN HARRY POTTER