Sooo, some explanation is needed for this one, haha.
For AX 2009, me and my friend Tali decided we wanted to cosplay the Blackrock Shooter versions of Miku and Rin. We started putting together the costumes and everything was fine and dandy, but then at the last minute, we had to change plans because we weren't going to be able to get proper wigs in time. Not wanting the half finished costumes to go to waste, we decided we would fab them up into this sort of ridiculous pop diva, Lady Gaga, BRS mash-up. They were hilariously bad and we literally just spent the entire time we were in them dancing like Christopher Walken up and down the escalators in our shutter shades.
tl;dr: this is not a canon Vocaloid costume and the whole idea was supposed to be funny.