Jang Yoon-ju (Korean: 장윤주; born November 7, 1980) is a South Korean model, television personality, singer-songwriter and actress. Yoon-ju began modeling in 1997 when she was 17 years old, and became one of the most successful Korean fashion models, with a career spanning almost two decades.[1][2][3] She also hosts Korea's Next Top Model, and won Best Radio DJ at the 2013 KBS Entertainment Awards for KBS Cool FM's Rooftop Radio