I found some words in the traffic sources> Search Keywords: IA vocaloid 3 cosplay! :D
So, I posted SeeU's photo (I can't got the IA's! >o<). I got it from deviantart. I've write the source, it's Tomia so you may visit her accounts and say, "You're awesome! :la" (haha)
I just pick one. You can see the others at her deviant account at http://tomiaaa.deviantart.com/
The picture's belongs to Tomia.