Foreman was born in California, the daughter of Lynette and Clyde Foreman, a Marine Corps pilot. She was raised in Arizona and Texas. When she was thirteen, her parents enrolled her at the Barbizon School of Modeling in Houston to help her overcome shyness, where she received a trophy after completing the courses. In high school, Foreman received high marks and was a cheerleader. While she was still a student, local photographer Wally Lewis hired her for newspaper and catalog ads. A chance meeting with a representative of Wilhelmina Models led to her signing with their California office and modeling assignments for Maybelline cosmetics.