Here's a picture:
The biggest struggle with the Pikachu costume was the hat. I actually used an old Japanese pattern book pattern for the shirt and a self-drafted pj bottom pattern for the pants. The hat, however, is a different matter. To save myself time, I bought Simplicity 1953 - a simple hat pattern. Trick on me, it was not simple. To sum it up, I spent more time on that hat than I did making the shirt, pants, and tail! Oh well, the end result worked out.
Some more pictures:
Hope you got lots of candy last night!!