She is bisexual, a fact which she realised at the age of 13. She lost virginity to a basketball player at school at age of 16.
She started her career as a model. In 2003, Leone signed a three-year contract with Vivid Entertainment with which she transitioned into the world of absolute p0rn0graphy, stating that she would only do le$b!an scenes. Sunny has worked in many A-films.