Wife and I are going as:
I didn't get the official shirts, but got a maroon t-shirt, some sweatbands, some women's XL running shorts (have to shorten them even some). The only question is if I actually shave my legs. I'm leaning towards yes. My legs are quite hairy, so it wouldn't work well otherwise. Shouldn't take long to regrow.
My wife has the jeans, a skirt to wear over them, a shirt to wear with a pillow underneath, a hoodie, and some chucks.