(Left: Kagamine Len. Right: Kagamine Rin.)
Obsessed with the Kagamine's.
They're part of the Vocaloids too.
Just in case you're wondering what Vocaloids are:
Vocaloid is a singing synthesizer application software developed by the Yamaha Corporation that enables users to synthesize singing by typing in lyrics and melody. (Quoted from Wiki, further information here.)
Magnet - Kagamine Rin & Len.
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Not forgetting about Hatsune Miku, another Vocaloid.
Packaged - Hatsune Miku.
