An interesting story shared by poopiness on soompi!

The photo above was captured when the girls were present on United Ambasadors for Global Life a few days ago.

Jessica was spotted touching Yoona's butt during the event.She was standing behind Yoona during the event and she slowly moved her hand towards Yoona's butt,after touching it she pretended as she has not done it,but of course Yoona knew that that was done by her dorky unnie.

Maybe Jessica has learned some dorkiness from leader Tae Yeon!