Yoona revealed a shocking see-through look.

On May 11, Girls' Generation performed at the 'I Love You Korea 2013 Dream Concert' held in Seoul.

On this day, Girls' Generation members revealed a chic yet sexy army look. They wore leather pants and leather jackets or tattoo stockings.

Girls' Generation(SNSD)'s Yoona and Seohyun Performance at '2013 Dream Concert' [PHOTOS]

Girls' Generation(SNSD) Performance at '2013 Dream Concert' [PHOTOS]

Yoona's see-through fashion especially caught much attention. She wore a leather top that was made with net on the bottom, reveailng all of her stomach, including her abs.