Although Cassandra Peterson is best known for her iconic role as 'Elvira, Mistress of the Dark', her journey in the entertainment industry began long before she donned her trademark low-cut black dress and towering wig. As a then 17-year-old showgirl in Las Vegas, Cassandra was performing in a show called Viva Les Girls at the Dunes Hotel when she met Elvis Presley and struck up a conversation with him in 1969. It resulted in priceless advice from the legendary singer that stuck with her and "100% changed her life" for the better.