With the appearance of sexy Seolhyun on the most anticipated upcoming episode of Running Man, male cast and guest would be really hyped up.

In new preview photos released, it is revealed that Seolhyun does Yoon Eun Hye's famous "Bubi Bubi dance" with Gary. In the photo, the two face each other and Seolhyun rests her hands on Gary's shoulders while dancing sexily and flipping her hair. On the other hand, Gary gives a hilarious expression as if he's frozen due to the awkwardness of the situation.

He must have a heart attack! Don't miss this part in Running Man: X-Man special on Sunday!