140530 Girls Generation Seohyun congratulates Yoona with a group photo from her birthday celebration

"Today is YoonA unnie’s birthday~~! I feel so blissful to be able to spend the whole day with unnie on your birthday♥ㅋㅋ To be able to wish you happy birthday every year like this, you have no idea how happy i am~!! Due to practices, the 3 unnies who cannot get together to take photo sorry!!ㅜㅜ photo by Fany unnie♡"