Kang Ji-hyun (Hangul: 강지현; born February 12, 1992), better known by her stage name Soyou (소유), is a South Korean singer. She is best known as a former member of the South Korean girl group SISTAR under Starship Entertainment. Soyou was a Cube Entertainment trainee before debuting with Sistar and was originally supposed to debut as a member of 4Minute. Soyou has said that she didn't make it into the group because she was lacking in many ways.