T-ara's Jiyeon has been criticized for her stage manners during the group's performance on KBS's "Concert 7080" on December 26th. Viewers have been expressing their disappointment with her blank face, and the insincere manner of how she performed the choreography. Jiyeon appeared aloof through both performances of "Yayaya" and "Like An Indian Doll", which eventually lead to KBS's message board being flooded with discontented viewers. One viewer commented, "I don't know whether Jiyeon had personal issues, but she's still a celebrity and it was uncomfortable watching her.� She really needs to become more professional."� Others wrote, "T-ara needs to write an apology...," and "I thought Jiyeon was a pro, but it seems I was wrong.�Was the 7080 concert not important enough for her?" Online community site Instiz has also uploaded a video of the broadcast, heating up the controversy even further. Core Contents Media addressed the issue, "Ever since their 'YaYaYa' promotions, the members have had a packed schedule with preparing for the year-end festivals and filming their reality show. Getting barely two hours of sleep, we feel helpless as people who look over them." However, they could not deny that Jiyeon's actions during the broadcast were inappropriate. "Jiyeon has a more punishing schedule than the other members due to her drama filming for 'Jungle Fish 2'. But we believe that she herself needs to put in more effort in regards to showing these kind of images." Check out the video below (starts from 3:14): Source: DongA Ilbo, Asia Today via Nate