Ngọc-Thanh was born on December 15th, 1969. Ngọc-Thanh's father is Tân and her mother was Khiêu Nguyễn hữu. Her paternal grandparents were Cửu and Hợi Nguyễn hữu. She has four brothers and four sisters, named Hùng, Mạnh, Cường, Đức, Tâm, Thủy, Thu and Trang. She has an adopted brother named Quang.