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.
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![STAYC 1st World Tour [TEENFRESH] in Seoul](/img/w185/3QVbLW4FOW9xLg83CpDIIuoyyub.jpg)
