The Sacramento Comicbook, Toy & Anime Convention is held a few times a year. It's pretty small, essentially a large dealer's room with small areas set aside for gaming, artists, guests, and a maskerade. Quite frankly I'm amazed how many people attend dressed in costumes. But I guess if you put effort into creating a cosplay costume any opportunity to show it off should be taken.
So yeah, I took a couple pictures. But only of costumes I was REALLY impressed by... like:
This guy's Joker was impressive because he painted over his mustache, like Ceasar Romero.

Two ladies were dressed like the two aspects of Dr. McNinja's Soul.

I think the Dr McNinja Prop, which they had to carry around for the whole convention sells the costume and speaks to their dedication to accessories.
Then there was this awesome Doctor Doom costume I saw a girl in the audience wearing at the Masquerade.

Oh yeah, and I saw a friend win the award for best costume.