IU recently changed her hair color from light brown to black! A picture has been floating around internet from KBS's "Teen Concert", and IU is seen looking more a mature student with this clean hairstyle. It's said that she colored her hair especially for the back-to-school season. After seeing the picture, netizens commented, "She returned to black hair because she's a student. She sure is aware of others!", "She looks younger in black hair". IU is currently acting in KBS2TV's "Dream High". Source: Daily Sports via Nate