Cassandra Dawn is a Playboy fan favorite - having been a featured CyberGirl on several occasions. What makes her so irresistible? According to Cassandra, it's not her jaw-dropping beauty and perfectly shaped body. “I hypnotize men with my sultry singing voice,” she reveals. “I’m inspired by the sirens in Greek mythology.” We're not entirely sure about that, but we do know that this sexy siren is music to our eyes.