Girls' Generation's never before seen photos were revealed.

On July 23, photographer Oh Joong Suk posted on his Twitter "Yoona Photos," along with the following set of photos.

In the revealed photos, Yoona can be seen lying down on her side with a dress and bang hairstyle. Her unusually seductive appeal is receiving much attention.

Those who saw the photo commented "I wonder what this was for," "Famme Fatal Yoona," and "I can't believe there is this side to her."

Photo Credit: Oh Joong Suk Twitter