Y
Yoon
Sim Jayun
♀ female
April 14, 2004(21 years old)
Korean
Gwanju, Jeolla-do, South Korea
Debuted November 12, 2020
0 followers
Position
Lead Vocalist
Groups
S
STAYC
High Up Entertainment
Joined: November 12, 2020
172 cm
49 kg
MBTI: ENFP
Aries
Blood Type: A
Biography
•She has an older sister.
•Yoon was introduced on October 15
•2020.
•Her favorite color is yellow.
•Her favorite food is steamed eggs cooked by her grandmother.
•She is the tallest member.
•Her favorite groups are GFRIEND & Red Velvet.
•Her role model is BLACKPINK's Lisa.
•Yoon would like to have a collaboration stage with (G)I-DLE.
•She was voted as the group's most energetic member.
•Favorite Food: Her mom's marinated grilled pork.
•She's a fan of Yena.
•She wants to collaborate with Little Mix.
•Her favorite Disney princess is Belle.
•Her nicknames are Barbie Doll
•and Baby Tiger.
Posts
P
posts_bot
Feb 1, 2026
STAYC - 23rd January, A Day So Happy I Can't Open My Eyes @ STAY:SEE (260131) [ENG SUB]
STAYCIsaJSeeunSieunSuminYoon
29d ago
P
posts_bot
Jan 3, 2026
STAYC ISA & Yoon - WHERE YOU AT (orig. ALLDAY PROJECT Annie & Woochan) (Dance Challenge) (260102)
ALLDAY PROJECTSTAYCIsaYoon
58d ago
P
posts_bot
Dec 27, 2025
STAYC - EP.8: Making an idol album with AI @ What's Good, SE-YOUNG? (251226) [ENG SUB]
STAYCIsaJSeeunSieunSuminYoon
65d ago
