Sistar was a South Korean girl group formed in 2010 by Starship Entertainment. The group consisted of Hyolyn, Bora, Soyou, and Dasom. Their debut studio album So Cool was released on 9 August 2011.

Stage Name: Hyorin/Hyolyn/효린
Real Name: Kim Hyojung/김효정
Nicknames: Korea’s Beyonce
Birthday: January 11, 1991
Birthplace: Incheon, South Korea
Blood Type: B
Height: 164 cm
Weight: 45 kg
Position in group: Leader, Main Vocalist, Lead Dancer, Lead Rapper, Face of the Group
Languages: Korean
Instruments: harp
Hobbies: singing, dancing
Siblings: one younger sister
Fans: Hyotties

Stage Name: Bora/보라
Real Name: Yoon Bora/윤보라
Nicknames: Archery Goddess
Birthday: January 30, 1990
Birthplace: South Jeolla, South Korea
Blood Type: O
Height: 165 cm
Weight: 46 kg
Position in group: Main Rapper, Main Dancer, Vocalist, Visual
Languages: Korean
Hobbies: exercising, dancing
Siblings: one older brother
Education: Myongji University, Major in Music
Fans: aBORAbles

Stage Name: Soyu/Soyou/서 유
Real Name: Kang Jihyun/강지현
Nicknames: Little Lee Mi Yeon, bagel girl
Birthday: February 12, 1992
Birthplace: Jeju Island, South Korea
Blood Type: O
Height: 168 cm
Weight: 49 kg
Position in group: Lead Vocalist
Languages: Korean
Hobbies: singing
Siblings: one older brother, one older sister
Fans: SOYOUniques

Stage Name: Dasom/다솜
Real Name: Kim Dasom/김다솜
Nicknames: Happy Virus
Birthday: May 6, 1993
Birthplace: Seoul
Blood Type: A
Height: 167 cm
Weight: 44 kg
Position in group: Vocalist, Visual, Maknae
Languages: Korean
Hobbies: acting, singing
Siblings: one older brother
Education: Anyang Arts School
Fans: DASOMnias