Sieun (STAYC)
| Full Name | Park Si Eun |
| Stage Name | Sieun |
| Native Name | 박시은 |
| Birthday | August 1, 2001 |
| Age | 24 years old |
| Zodiac Sign | Leo |
| Height | 159 cm (5’3″) |
| Weight | N/A |
| Blood Type | A |
| MBTI Type | ENFJ |
| Birthplace | Seoul, South Korea |
| Nationality | Korean |
| Group | STAYC |
| @hermesieunn |
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