On December 31st, MBC hosted the final big music festival of the year with their '2011 MBC Gayo Daejaejun'. Idol groups and artists of various genres gathered at the Speed Dome in Gyeonggi-do, and many were decked out in outfits that matched a concept they had been promoting earlier in the year. Girl's Day wore frilly schoolgirl-inspired costumes that emphasized their girlish aegyo, while Super Junior dressed in chic outfits that were reminiscent of their "Superman" look. Check out the rest of the groups below, and stay tuned for updates on performances! [gallery link="file"] Image: As tagged