SISTAR's�Bora has revealed her older brother on broadcast for the first time. During the latest recording of KBS's 'Invincible Youth 2', Bora's older brother made a surprise visit to the set, grabbing the attention of the other G8 members. The mothers of the other G8 members were present, and at first, Bora thought that hers didn't make it. Disappointed, she muttered, "I called my mother a little while ago, but she said she was out playing with her friends." Moments later, Bora's mom appeared, surprising her daughter. Bora and the other G8 members spent the day showing their mothers around the idol village, introducing the barn they had built and the animals they had received. Bora's older brother appeared as another 'surprise guest', receiving an extra warm welcome from the G8 girls. Bora's brother came to the 'Invincible Youth 2' set to help his mom with driving at night, but ended up meeting the G8 members. While Bora was introducing her brother to the G8 members, Rainbow's Go Woori, who was taken by his good looks, could not hide her fluttering heart - drawing laughter amongst the other members. Be sure to catch this episode of 'Invincible Youth 2', which will air on January 14th at 11:05 KST. Source: TV Daily via Nate