Well, I might be a day late in some timezones, but for me it's only the morning of the 27th. December 27th marks Rin & Len Kagamine's first birthday. I figured I should do a birthday post for the Kagamine twins since I did one for Miku. So I present you a small gallery of pictures and a few videos. Happy Birthday Rin & Len! If you haven't seen them before you might be interested in my Figma Rin & Len posts, or perhaps the Figma Vocaloid2 group post. There's also the Crazy Kagamine Video, and Vocaloid - Kagamine Twins post for more pictures and videos.
Click pictures for higher resolution. Images taken from Gelbooru