Shim Ja-yun (심자윤), known under her stage name Yoon (윤), is a South Korean singer/K-pop idol. She is under High Up Entertainment. She is best known as one of the lead vocalists of the girl group STAYC.
Shim Ja-yun (심자윤), known under her stage name Yoon (윤), is a South Korean singer/K-pop idol. She is under High Up Entertainment. She is best known as one of the lead vocalists of the girl group STAYC.
![STAYC 1st World Tour [TEENFRESH] in Seoul image](https://image.tmdb.org/t/p/original/3QVbLW4FOW9xLg83CpDIIuoyyub.jpg)