TWICE (Oct. 20, 2015 - present)   (Members from left to right: Nayeon, Dahyun, Sana, Jihyo, Mina, Jeongyeon, Chaeyoung, Momo, and Tzuyu)   Twice is a South Korean girl group formed by JYP Entertainment. The group is composed of nine members: Nayeon, Jeongyeon, Momo, Sana, Jihyo, Mina, Dahyun, Chaeyoung, and Tzuyu. Twice was formed under the television program Sixteen and debuted on October 20, 2015, with the EP The Story Begins.   Twice rose to domestic f