"I" has been steadily racking up the views over the past year and a half, and it has finally managed to hit the big 100 million mark on YouTube. In response to this big achievement, Taeyeon thanked all her fans by posting up a new photo on Instagram with the caption "Youtube 100 million views??? #OutIisthebest #i.".
A huge congratulations to Taeyeon for this big milestone! To celebrate, let's re-watch that gorgeous "I" MV again: