| Real Name | Kim Yoo-jung (김유정) |
| Nickname | Nation’s Little Sister, Sageuk Fairy, Nation’s First Love |
| Gender | Female |
| Profession | Actress |
| Height | 164 cm (5 ft 3 in) |
| Weight | ~48–50 kg |
| Eye Colour | Dark Brown |
| Hair Colour | Dark Brown |
| Date of Birth | |
| Birth Place | Seongdong District, Seoul, South Korea |
| Hometown | Seoul, South Korea |
| Nationality | South Korean |
| Zodiac Sign | Virgo |
| Education | High School Graduate |
| School / College | Goyang High School of Arts |
| Parents | Parents (names not public), Brother (b. 1993), Sister Kim Yeon-jung (b. 1996, actress) |
| Spouse | None |
| Marital Status | Unmarried |
| Hobbies | Reading, Traveling, Music |
| Net Worth | Estimated $25 million (2024 report) |
Kim Yoo-jung began her career at the age of four as a child model before debuting in acting in 2003. By the time she was in elementary school, she had already appeared in more than a dozen...
She debuted at age 4 after her mother posted her photo online.
She was once nicknamed “Nation’s Little Sister” in Korea.