She has explained that the years between ages three and seven were some of the most difficult in her life.
Looking back, she realized that many children around her were experiencing similar circumstances. Many families in her neighborhood were led by single mothers, and there was often a revolving door of new relationships, strangers entering homes, and exposure to drugs and emotional instability.
It created an environment where children were often left to figure things out on their own.
For Christina, it meant learning to grow up quickly.
A Life on Television Before She Could Walk
Despite the difficulties in her home life, one constant presence was the entertainment industry.
Because her mother worked as an actress, Christina was introduced to television sets and film studios almost immediately after she was born.
Her very first appearance on television happened when she was just a baby.
She appeared alongside her mother on the long-running soap opera Days of Our Lives.
Even earlier than that, she appeared in a commercial for Playtex baby bottles when she was only three months old.
For most children, childhood is a time of play and discovery.
For Christina, it was also a time of working in front of cameras.
By age ten, she had already landed a role in the horror film Jaws of Satan. Soon after that, she played a young version of actress Grace Kelly in a television biopic about the Hollywood star who later became Princess of Monaco.