Oh My GirlMain DancerLead VocalistFace of the Group
YooA
유아Yoo Si-ah (유시아)
Oh My Girl's lead vocalist and main dancer, a soloist whose releases include Bon Voyage, Selfish and Borderline.
- Age
- 30
- Sep 17, 1995
- Height
- 159 cm
- 5′3″
- MBTI
- INFP
- self-reported
- Debut
- 2015
- with Oh My Girl
At a glance
Profile
- Stage name
- YooA (유아)
- Birth name
- Yoo Si-ah (유시아)
- Position
- Main Dancer, Lead Vocalist, Face of the Group
- Birthday
- September 17, 1995 (age 30)
- Zodiac sign
- Virgo
- Chinese zodiac
- Pig
- Height
- 159 cm (5′3″)
- Weight
- 44 kg
- Blood type
- A
- MBTI
- INFP
- Nationality
- South Korean
- Birthplace
- Sinchang-dong, Yongsan-gu, Seoul, South Korea
- Joined
- April 20, 2015
10 facts
About YooA
YooA, born Yoo Yeon-joo and now legally named Yoo Si-ah, is a lead vocalist and main dancer of Oh My Girl. She left WM Entertainment for individual management in 2025, worked with Saram Entertainment, and signed with Ringcoms in September 2026 while remaining a member of the group.
- 01
Was born Yoo Yeon-joo and later legally changed her name to Yoo Si-ah.
- 02
Her older brother Yoo Jun-sun is a dancer and choreographer associated with 1MILLION Dance Studio.
- 03
Finished fourth in the second episode of Mnet's Hit the Stage in 2016.
- 04
Joined the project group Sunny Girls for the 2016 single "Taxi".
- 05
Performed in the Idol Drama Operation Team project group Girls Next Door in 2017.
- 06
Made her solo debut with Bon Voyage on September 7, 2020 and earned a music-show win eight days later.
- 07
Followed her debut EP with Selfish in 2022 and Borderline in 2024.
- 08
Made her feature-film acting debut in Project Y.
- 09
Signed with Saram Entertainment for individual activities in June 2025 after leaving WM.
- 10
Moved to Ringcoms for individual management in September 2026 while DSP Media continued to manage Oh My Girl.
3 tracks
Solo & unit tracks
Songs on Oh My Girl releases that feature YooA on her own or in a unit.
- EP
“Love Me Like You Do”
Unit: Hyojung & YooA · Dreamy Resonance
- EP
“It Is Said”
Japanese version; unit: Mimi, YooA, Seunghee & Jiho · Banana ga Tabenai Saru
- EP
“It Is Said”
Unit: Mimi, YooA, Seunghee & Jiho · Banana Allergy Monkey
5 other members
