Choi Ji-woo, known as Jiwoo, was born on September 7, 2006, in Godeok-dong, Gangdong-gu, Seoul, South Korea. She is a South Korean singer and is recognized as the leader of the girl group Hearts2Hearts (H2H). Jiwoo stands at a height of 169 cm and also holds positions as a lead dancer, rapper, sub vocalist, and visual within the group. Before her career as an idol, Jiwoo was a ballerina, having practiced ballet for six to seven years. Her journey into the K-pop industry began unexpectedly when she was street-casted by SM Entertainment in the sixth grade. She underwent a trainee period of approximately six years before her debut. Hearts2Hearts officially debuted on February 24, 2025, under SM Entertainment. Jiwoo is Catholic, and her baptismal name is Stella; she also has an older brother born in 2004. She has a pet dog named Kong, and her given name, Choi Ji-woo, translates to 'achieve high and meaningful dreams'. Jiwoo's role model is Karina from the girl group aespa.