She's inviting all, professional cosplayers or not, to join her on March 31, 2012 for her Birthday Bash's Cosplay Showdown. Read the mechanics here.
As much as I would love to prepare something, I just can't. Creativity doesn't exist that much in my persona. I could imagine such but if I to put it on paper it's gone.
But she said anything could be cosplayed, so who knows. :D
If you're attending, visit the Event Page here and like it!