Instagram Taeyeon once again shared the clip of herself being adorable with Sooyoung backstage during "I" promotion.

Ash-Pikachu · October 7, 2016

kpopisnotmylife · October 7, 2016

My two biases

lovenatu · October 7, 2016

God, I love them. They're so cute.

Seohyun Potato · October 7, 2016

I was smiling from ear to ear watching them.

iamayam · October 7, 2016

Wait i've watched this?

Seulchu · October 7, 2016

shocking blue · October 7, 2016

I love how quickly she goes from "sunbaeniiim" to "YAH!" *hitting with CD*

Samkairi · October 7, 2016

Wait i've watched this?

You probably first saw this from sooyoung's post

Sooyoung posted this earlier, from last year hahahaha The one Taeng posted today is more longer though. YAY FOR US!!

ceeend · October 7, 2016

I remember this jokester Sooyoung will never change

It has been a year yet it's still fresh and funny lol

Catallena · October 7, 2016

I remember this video lol cuute

Avatarkyungsoo · October 7, 2016

is there a reason why taeyeon has been posting a lot about I lately? Is it her anniversary for going solo or something?

taesone · October 7, 2016

is there a reason why taeyeon has been posting a lot about I lately? Is it her anniversary for going solo or something?

Yes it is! Yesterday in Korea was the 1 year anniversary of I's release!

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