At the age of two Sung Hi's parents divorced, leaving her and her younger brother to be raised by her grandparents. Her mother became a business woman in Korea and her father, who was a graduate of the Seoul National University, became a business man in the USA. During her elementary school years, she and her brother moved to Chicago to be with their father. They moved around , living in Houston, Dallas and Washington, D.C. In 1988 at a Dallas nightclub Sung Hi was discovered by her future agent Jim Whitehead.