[페이스캠4K] 스테이씨 시은 'SO WHAT' (STAYC SIEUN FaceCam)│@SBS Inkigayo_2021.05.09.#인기가요 #STAYC #SO_WHAT☞ MORE SBS KPOPTwitter : / kpop_sbs Facebook : / sbskpop Instagram : / sbskpop_official