SISTAR 씨스타 is a South Korean girl group formed in 2010 with four girls.
Kim Hyo Jung better known as Hyolyn born on 11th January 1991 (now she's 23 years old).
Yoon Bora, better known as Bora born on 30th January 1990 (now she's 24 years old).
Kang Ji Hyun better known as Soyou born on 12th February 1992 (now she's 22 years old).
And, Kim Da Som better known as Dasom born on 6th May 1993 (now she's 21 years old).
Their first debut song "Push Push" release in June 2010 once their formed this group. And their first debuted album were officially released in 2011 named "So Cool".
