| Origin | Seoul, South Korea |
| Debut | N/A |
| Disbanded | 2021 |
| Number of Members | 4 |
| Members | Hyeyeon Xiyoung Chaeeun Zizi Dayul |
| Oldest Member | Hyeyeon |
| Youngest Member (Maknae) | Zizi |
Birthday Former Members Profile
Hyeyeon
| Full Name | Ko Hyeyeon |
| Birthday | March 18, 1994 |
| Birthplace | N/A |
| Age | 32 years and 3 months old |
| Height | N/A |
| Zodiac Sign | Pisces |
| Position | Leader |
| kkohyeyeon |
Xiyoung
| Full Name | Park Jooyoon |
| Birthday | January 07, 1997 |
| Birthplace | N/A |
| Age | 29 years and 5 months old |
| Height | 5 feet 4 inches (163 cm) |
| Zodiac Sign | Capricorn |
| xiyoung.xom |
Chaeeun
| Full Name | Lee Chaeeun |
| Birthday | March 25, 1997 |
| Birthplace | N/A |
| Age | 29 years and 3 months old |
| Height | 5 feet 5 inches (165 cm) |
| Weight | 94 lbs (43 kg) |
| Zodiac Sign | Aries |
| Blood Type | A |
| Position | Lead Vocalist |
| 1m_3.25 |
Zizi
| Full Name | Ko Jisu |
| Birthday | February 26, 1998 |
| Birthplace | N/A |
| Age | 28 years and 4 months old |
| Height | N/A |
| Zodiac Sign | Pisces |
| Position | Maknae |
| gsu0226 |
Dayul
| Full Name | Kang Dabin |
| Birthday | May 09, 1997 |
| Birthplace | N/A |
| Age | 29 years and 1 month old |
| Height | 5 feet 7 inches (170 cm) |
| Weight | 99 lbs (45 kg) |
| Zodiac Sign | Taurus |
| Blood Type | A |
| Position | Main Vocalist |
| _bi_nio5o9 |
Member Ages: Oldest to Youngest
| Member | Birthday | Age |
|---|---|---|
| Hyeyeon | March 18, 1994 | 32 years, 3 months, 10 days old |
| Xiyoung | January 07, 1997 | 29 years, 5 months, 21 days old |
| Chaeeun | March 25, 1997 | 29 years, 3 months, 3 days old |
| Dayul | May 09, 1997 | 29 years, 1 month, 19 days old |
| Zizi | February 26, 1998 | 28 years, 4 months, 2 days old |
FAQs
How many members are in Birthday?
Birthday is a 4-member K-pop girl group. The group consists of Hyeyeon, Xiyoung, Chaeeun, Zizi, and Dayul.
