Group Super Junior member Siwon uploaded a surprising revealing picture, giving thanks to his fans.

Siwon yesterday posted on his twitter, "I don't know what to say at the overflowing love. Thank you so much again to my family, friends, and fans for the birthday wishes. Who am I that you show so much love," along with a picture.

In the picture, Siwon is topless, showing off his superior muscles. His muscular body and his charismatic eyes are surely must have shaken the hearts of many fans.

Internet users commented, "So sexy," "Happy birthday," and "Perfect looks along with perfect body.”

Photo: Siwon Twitter