If you are doing it for the fun of it, then do whatever you like, or can get to.
If you want it to be judged, I would think that the judges might like to see the coat. but that doesn't mean you might get an award for just the shirt. up to them.
but in my opinion, nothing at Costume-Con should be built unless it's for fun, so do as you like, and hope for the best. I promise to clap and say YAY either way
owner of Castle Blood the most interactive, costume friendly haunted house anywhere.
Co-Chair Costume-Con 27 ( 2009) Baltimore,Maryland
Cosplay Guest of Honor, Anime North, Toronto, May 2009,2010
founding president NJ/NY chapter ICG
2004 recipient ICG Lifetime Achievement Award