| Origin |
Seoul, South Korea |
| Debut |
August 19, 2026 |
| Number of Members |
7 |
| Members |
Cho Hyejin
Kuk Chorok
Shin Hyewon
U
Baby
Achiraya
Kilala |
| Oldest Member |
Kuk Chorok |
| Youngest Member (Maknae) |
Kilala |
| Tallest Member |
Achiraya |
| Shortest Member |
U |
OURBIRTHDAY Members Profile
Cho Hyejin
| Full Name |
Cho Hye-jin (조혜진) |
| Birthday |
October 24, 2007 |
| Birthplace |
Seongha-dong, Sangju, Gyeongsangbuk-do, South Korea |
| Age |
18 years and 11 months old |
| Height |
5 feet 4 inches (163 cm) |
| Zodiac Sign |
Scorpio |
| Chinese Zodiac Sign |
Pig |
| MBTI |
ENFJ |
| Education |
Hanlim Department of Practical Dance |
| Position |
Leader, Main Dancer |
Kuk Chorok
| Full Name |
Kuk Cho-rok (국초록) |
| Birthday |
July 28, 2005 |
| Birthplace |
Gwacheon-si, Gyeonggi-do, South Korea |
| Age |
21 years and 2 months old |
| Height |
5 feet 4 inches (163 cm) |
| Zodiac Sign |
Leo |
| Chinese Zodiac Sign |
Rooster |
| MBTI |
ESTP |
Shin Hyewon
| Full Name |
Shin Hye-won (신혜원) |
| Birthday |
October 5, 2005 |
| Birthplace |
Hwawon-myeon, Haenam-gun, Jeollanam-do, South Korea |
| Age |
21 years old |
| Height |
5 feet 3 inches (160 cm) |
| Zodiac Sign |
Libra |
| Chinese Zodiac Sign |
Rooster |
| Blood Type |
O |
| MBTI |
ISFP |
| Position |
Vocalist |
U
| Full Name |
Kawasaki Yu (川崎優) |
| Birthday |
August 21, 2008 |
| Birthplace |
Chiba, Japan |
| Age |
18 years and 1 month old |
| Height |
5 feet 2 inches (158 cm) |
| Zodiac Sign |
Leo |
| Chinese Zodiac Sign |
Rat |
| MBTI |
INFJ |
| Position |
Rapper |
Baby
| Full Name |
Hsieh Chia-Hsuan (謝佳軒) |
| Birthday |
February 10, 2009 |
| Birthplace |
Kaohsiung, Taiwan |
| Age |
17 years and 8 months old |
| Height |
5 feet 3 inches (160.7 cm) |
| Zodiac Sign |
Aquarius |
| Chinese Zodiac Sign |
Ox |
| MBTI |
INTJ |
| Position |
Main Dancer |
Achiraya
| Full Name |
Achiraya Karwinwit (อชิรญา การ์วินวิท) |
| Birthday |
August 18, 2009 |
| Birthplace |
Thailand |
| Age |
17 years and 1 month old |
| Height |
5 feet 5 inches (164 cm) |
| Zodiac Sign |
Leo |
| Chinese Zodiac Sign |
Ox |
| MBTI |
ESFP |
| Position |
Vocalist |
Kilala
| Full Name |
Takashima Kirara (高島きらら) |
| Birthday |
December 17, 2010 |
| Birthplace |
Japan |
| Age |
15 years and 9 months old |
| Height |
5 feet 3 inches (160 cm) |
| Zodiac Sign |
Sagittarius |
| Chinese Zodiac Sign |
Tiger |
| MBTI |
ENFP |
| Position |
Maknae, Visual |
Member Ages: Oldest to Youngest
| Member |
Birthday |
Age |
| Kuk Chorok |
July 28, 2005 |
21 years, 2 months, 15 days old |
| Shin Hyewon |
October 5, 2005 |
21 years, 8 days old |
| Cho Hyejin |
October 24, 2007 |
18 years, 11 months, 19 days old |
| U |
August 21, 2008 |
18 years, 1 month, 22 days old |
| Baby |
February 10, 2009 |
17 years, 8 months, 3 days old |
| Achiraya |
August 18, 2009 |
17 years, 1 month, 25 days old |
| Kilala |
December 17, 2010 |
15 years, 9 months, 26 days old |
FAQs
How many members are in OURBIRTHDAY?
OURBIRTHDAY is a 7-member K-pop girl group. The group consists of Cho Hyejin, Kuk Chorok, Shin Hyewon, U, Baby, Achiraya, and Kilala.
When did OURBIRTHDAY debut?
OURBIRTHDAY debuted on August 19, 2026, with their song SQUEEZY.