#update 2: my friend ria charlotte darlingkisses01 sourced the middle image for me :)

[vocaloidfactoftheday]

An alternate version of Nekomura Iroha's VOCALOID2 illustration appears to exist, without the speakers on her arms or the Hello Kitty hood (instead being replaced with the headband from her Kittyler design). This was used to advertise an illustration contest for Iroha's first anniversary, but otherwise seems to be very rare.

(middle image from Tokyo Otaku Mode)

(source (+ right image source): Hatsune Miku Miku)

(thanks to @glaberr for sharing the middle image!)