Yoon
Known For
![STAYC 1st World Tour [TEENFRESH] in Seoul](https://image.tmdb.org/t/p/w500/3QVbLW4FOW9xLg83CpDIIuoyyub.jpg "STAYC 1st World Tour [TEENFRESH] in Seoul")
Biography
Shim Ja-yoon, known professionally as Yoon, is a South Korean singer under High Up Entertainment. She is a member of the girl group STAYC.
![STAYC TOUR [STAY TUNED] in Sydney](https://image.tmdb.org/t/p/w300/fsAVgRn8lIjFdweHpq6uODxhK8r.jpg)
![STAYC 1st World Tour [TEENFRESH] in Seoul](https://image.tmdb.org/t/p/w300/3QVbLW4FOW9xLg83CpDIIuoyyub.jpg)