Girl group Girls' Generation (SNSD) Yoona during high school days is becoming an issue.

Recently in an online community forum, several pictures were posted under 'Yoona during high school days.'

The revealed pictures were of Yoona when she came out in MBC "Happiness in 10000."

Unlike the sexy image she shows on stage, she had no makeup on and had her long straight hair down, catching much attention for her innocent beauty.

Internet users who saw this commented, "She's so pretty even without makeup," "Goddess," etc.

Photo Credit: Online Community