DIA Sommy, who attended the rehearsal of Mnet 'M Countdown' held at CJ E & M Center in Sangam-dong, Seoul on the afternoon of the 25th, is posing.
About DIA
DIA is a South Korean girl group formed by MBK Entertainment. The group is currently composed of six members: Eunice, Jueun, Huihyeon, Yebin, Chaeyeon and Eunchae.
 Wikipedia