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'''Yoo Jeong-yeon''' (hangul: 유정연, originally named '''Yoo Kyung-wan)''' was born on November 1, 1996 in Suwon, South Korea; better known by her first name, '''Jeongyeon''', is a South Korean singer. She is a member of the girl group, Twice. She is the lead vocalist of the group.And also known as "The Girl Crush of the Group"