After revealing that she has lost 8kg for her comeback,�SISTAR's Soyu shared�what motivated her to lose it all in the first place. On the August 20th episode of�MBC's 'Quiz That Changes The World', Soyu confessed that she felt she looked fat in photos with her group members. The emcees, as well as the viewers, were initially surprised at how pretty Soyu had become. They commented,"Soyu became extremely pretty. We can't even recognize her". In response, Soyu said, "I worked really hard on my diet this time." Soyu also added, "When we took a picture together, I came out looking like a pig", referring to group photos she took with her fellow SISTAR members. Source & Photo: Newsen