Girl group SISTAR's Bora revealed her real brother.

In recent filming of KBS 'Invincible Youth 2', the G6 members held a bbq party with the lettuce they collected.

Bora, who had usually said "I'm so close to my brother that the things even my mom doesn't know, my brother knows", was shocked but happy at the surprise appearance of her brother.

When Bora's brother was asked 'Were you ever touched by your family members?', he answered, "Yes. When I came back from the army I had to return to school but it was hard to because of the finances of our family. That was the beginning of Bora's career as SISTAR, and with her first paycheck she paid for my tuition."

But when Girls' Generation Sunny's special guest Super Junior Sungmin came, she immediately asked him to switch places with her brother, bringing laughter to the set.

Photo: KBS