I found out about theses costumes the other day called morphsuits, my friend suggested that the group buy versions of the suit for a halloween party we're planning. I'm not sure whether they are genius or just silly? http://www.squidoo.com/halloween-morphsuit

Slenderman -UPDATED- I have finished the costume! Atleast, Until I get the stilts and then all there is to do is lengthen the pants, but that isn't a big part of it. it is 100% complete if I wasn't using stilts! Here's a picture. I'll try and get more later on, some creepier ones. Photoshoot...