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YOON is a member of the K-pop girl group STAYC.

YOON (STAYC) Profile

NameYOON | 윤
Full NameSim Jayun | 심자윤 | 沈姿潤
AKAShim Jayoon
Date of BirthApril 14, 2004
HometownGwangsan-gu, Gwangju, South Korea
Height171cm | 5′-08″
Shoe Size245mm
Blood TypeA
Zodiac SignAries
FamilyMother, Father, Older Sister
EducationGajaeul High School
Songgwang Middle School → Changchun Middle School
Dosan Elementary School
DebutSTAYC November 12, 2020
PositionLead Vocalist
Years Active2020 – present
LabelHighup Entertainment

YOON Facts

  • YOON got into Highup Entertainment as a trainee in 2019 and made her debut as a member of STAYC in 2020.
  • Training Period: 2 years
  • Highup Entertainment Audition Song: One Of These Nights by Red Velvet
  • Motto: If you don’t walk today, you’ll have to run tomorrow.
  • KiKi was her stage name candidate.
  • LISA (BLACKPINK) is her role model.
  • Her childhood dream was to become a singer, a ballerina or a scientist.
  • She thought she would become a government employee before she started her trainee life.
  • She took vocal and dance classes at Joy Dance & Plug In Music Academy in Gwangju.
  • If she could be a professional athlete, she would choose archery.
  • She plays video games in her free time.
  • Dream Collaboration: with (G)I-DLE
  • She is sensitive to heat.
  • She was a fan of BTOB in middle school.
  • Nickname: Sim Yoonja


  • Color: pink, green
  • Disney Princess: Belle
  • Fruit: oranges
  • Season of the Year: spring
  • Word: sarang (love)


  • Mother
  • Father
    He serves in the military.
  • Older Sister

References: IDDP, Melon TMI Battle, Personal Profile, STAYC Pajama Party EP01, November 2021 ESQUIRE Korea

K-pop Idols Born in 2004 | K-pop Idols Born in April | K-pop Idols From Gwangju

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