| Origin |
Seoul, South Korea |
| Debut |
November 24, 2025 |
| Number of Members |
6 |
| Members |
Xinyu
Kim YooYeon
Mayu
Kim ChaeYeon
Jeong HyeRin
Kim ChaeWon |
| Oldest Member |
Kim YooYeon |
| Youngest Member (Maknae) |
Kim ChaeWon |
tripleS Sun Members Profile
Xinyu
| Full Name |
Zhōu Xīn Yǔ |
| Birthday |
May 25, 2002 |
| Birthplace |
Beijing, China |
| Age |
24 years and 4 months old |
| Height |
5 feet 8 inches (174 cm) |
| Zodiac Sign |
Gemini |
| Blood Type |
O |
| MBTI |
ENTP |
| Position |
Leader |
| Instagram |
@z.xinyu_5 |
Kim YooYeon
| Full Name |
Kim Yooyeon |
| Birthday |
February 9, 2001 |
| Birthplace |
Banpo-dong, Seocho, Seoul, South Korea |
| Age |
25 years and 8 months old |
| Height |
5 feet 4 inches (165 cm) |
| Weight |
101 lbs (46 kg) |
| Zodiac Sign |
Aquarius |
| Blood Type |
B |
| MBTI |
INTP |
| Instagram |
@kimyooyeon_ |
Mayu
| Full Name |
Kōma Mayu |
| Birthday |
May 12, 2002 |
| Birthplace |
Tomioka, Gunma, Japan |
| Age |
24 years and 5 months old |
| Height |
N/A |
| Zodiac Sign |
Taurus |
| Blood Type |
B |
| MBTI |
ENFJ |
Kim ChaeYeon
| Full Name |
Kim ChaeYeon |
| Birthday |
December 4, 2004 |
| Birthplace |
Mia-dong, Gangbuk, Seoul, South Korea |
| Age |
21 years and 10 months old |
| Height |
5 feet 6 inches (170 cm) |
| Weight |
114 lbs (52 kg) |
| Zodiac Sign |
Sagittarius |
| Blood Type |
B |
| MBTI |
ESFP-A |
Jeong HyeRin
| Full Name |
Jeong HyeRin |
| Birthday |
April 12, 2007 |
| Birthplace |
Hwanggeum-dong, Suseong-gu, Daegu, Gyeongsangbuk-do, South Korea |
| Age |
19 years and 6 months old |
| Height |
5 feet 3 inches (161 cm) |
| Zodiac Sign |
Aries |
| Blood Type |
B |
| MBTI |
ESTP |
Kim ChaeWon
| Full Name |
Kim Chaewon |
| Birthday |
May 2, 2007 |
| Birthplace |
Incheon, South Korea |
| Age |
19 years and 5 months old |
| Height |
N/A |
| Zodiac Sign |
Taurus |
| Blood Type |
AB |
| MBTI |
INTP |
| Position |
Maknae |
Member Ages: Oldest to Youngest
| Member |
Birthday |
Age |
| Kim YooYeon |
February 9, 2001 |
25 years, 8 months, 4 days old |
| Mayu |
May 12, 2002 |
24 years, 5 months, 1 day old |
| Xinyu |
May 25, 2002 |
24 years, 4 months, 18 days old |
| Kim ChaeYeon |
December 4, 2004 |
21 years, 10 months, 9 days old |
| Jeong HyeRin |
April 12, 2007 |
19 years, 6 months, 1 day old |
| Kim ChaeWon |
May 2, 2007 |
19 years, 5 months, 11 days old |
FAQs
How many members are in tripleS Sun?
tripleS Sun is a 6-member K-pop girl group. The group consists of Xinyu, Kim YooYeon, Mayu, Kim ChaeYeon, Jeong HyeRin, and Kim ChaeWon.
When did tripleS Sun debut?
tripleS Sun debuted on November 24, 2025, with their album Beyond Beauty.