Judy Carter was born in Los Angeles, California, the second daughter of Esther Silverman Carter, an entrepreneur and owner of a Beverly Hills dress boutique "My Flair Lady," and Sidney Allen Carter, a mechanical engineer for LA Water & Power.
Judy was born with a speech impediment and her older sister, Marsha, was born with cerebral palsy and was quadriplegic. In order to better communicate with her sister and to make her laugh, Judy, then eight years old, began checking books on magic tricks out of the public library. She would practice the tricks to entertain her sister. She quickly became obsessed with magic and would take trips to Joe Berg´s Magic Store on Hollywood Blvd where she would buy her magic tricks. Each of the tricks came with a suggested patter and by practicing the patter over and over again, Judy overcame her speech impediment.