Yoo Jeong-yeon

Yoo Jeong-yeon (Hangul: 유정연; born November 1, 1996), known mononymously as Jeongyeon, is a South Korean singer. Yoo is a member of K-pop girl group TWICE that was formed by JYP Entertainment through the reality survival show Sixteen. Her sister is the actress Gong Seung-yeon.