Hyolyn, also known as Kim Hyo-jung, is a South Korean singer who rose to fame as a former member of the popular K-pop girl group Sistar. She was born on January 11, 1991, and began her career as a trainee at JYP Entertainment before later joining Starship Entertainment and becoming a member of Sistar. Hyolyn is known for her powerful voice, charisma, and stage presence.

She contributed to numerous group hits, including "Alone," "Touch My Body," and "Shake It." After Sistar disbanded in 2017, Hyolyn launched a successful solo career, releasing several hits such as "Dally," "See Sea," and "Bae." She has also collaborated with various artists and established herself as a versatile performer skilled in multiple genres such as pop, R&B, and hip-hop.

Hyolyn is praised for her impressive vocal technique, dance skills, and artistic vision, and has become one of the leading solo artists in the K-pop scene.