SECRET's Hyosung appeared in a school uniform for the recent recording of Bang Yong Guk's music video. In a recently revealed photo, Hyosung is dressed in a striped neck tie and a checkered mini-skirt, pulling off a cute schoolgirl look. The atmosphere on set is reported to have been lively during the two days of filming due to Hyosung's infectious smile: in fact, sources reveal that filming was temporarily delayed as the 500 extras on set began taking out their camera phones to snap photos when Hyosung appeared. The idol revealed that she wanted to appear in the music video to help out fellow TS Entertainment label mate Bang Yong Guk. Bang Yong Guk will debut as a member of a boy group on December 2nd with a digital single.