After word of this page spread around the internet, the category was taken down earlier today.
There are costumes that are scary, costumes that suck, and costumes that are just plain cool. This would fall squarely in the "plain cool" category. Last year, Glowy Zoey lit up the night with her stick figure costume, and now she's rocking a rainbow Minnie Mouse motif.
Deadmau5 would be proud.