140309 Girls Generation Seohyun wishes Taeyeon a Happy 26th Birthday!

"Yesterday was our Taeng Taenggoo~♥ Taeyeon unnie’s birthday!♥ I'm really grateful for your existence unnie..and I’m thankful once again^^ you know [what i mean] even if I don’t say it, right~? hehe let’s go on together for a long time! ♥-♥"