Seohyun made a surprise appearance at a North Korean art troupe‘s historic performance in Seoul on Feb. 11 to celebrate the PyeongChang Winter Olympics. Wearing a short, white minidress and high-heeled shoes, Seohyun joined North Korean singers on stage at the Haeoreum Hall of the National Theater of Korea in downtown Seoul to perform the North Korean song „Let‘s Meet Again“ and a common Korean song titled „Our Wish is Unification“ with them. The performers hugged as the audience gave them a standing ovation.