SISTAR (씨스타) is a four-member South Korean girl group formed in 2010 under the management of Starship Entertainment. The group consists of Hyolyn, Bora, Soyou and Dasom. 2010: Pre-debut, Push Push, Shady Girl, and How Dare You Sistar began their group activities early in 2010 with commercials and magazine photoshoots. The group made their official debut with the song "Push Push" on 1 June 2010. On 3 June, Starship released the accompanying music video for Push Push.