SISTAR (Hangul: 씨스타) was a four-member South Korean girl group formed in 2010 under the management of Starship Entertainment. The group consisted of Hyolyn (효린), Bora (보라), Soyou (소유), and Dasom (다솜). The group disbanded in May of 2017 after releasing their last single "LONELY". 2010: Pre-debut, Push Push, Shady Girl, and How Dare You Sistar began their group activities early in 2010 with commercials and magazine photoshoots.