This is my daughters own creation, took her a couple hours to make.
Step 1: The Fluffy Ghost Hat
She took a white knit hat, masking tape and stuck cotton balls all over it. Used the paper towels as a hat stand.
Step 2: The Siloette
simple white thermal pj's
Step 5: A Cape for the Whoooo Effect
took a white lace table cloth and safety-pinned around neck.