Singer IU revealed her shoulders.

Recently in an online community forum, a picture was posted under 'IU 2013 Japanese Calendar cover'.

The shocking rebellion was eye-catching. IU had long wavy hair with red lipstick on, trying the sexy image. Her facial expression and poses were also rebellious. IU stuck out her lips a little bit with a seductive look on her face. She also pulled down her fur a little bit to reveal her shoulders.

Internet users who saw this commented, "She went from a girl to a woman," "I didn't know she had a sexy side to her too," "I would buy that calendar no matter what," and "Still cute."

Photo Credit: Online Community