This was one of two Black Canaries I saw today but the only one I got a picture of.
He's The Nostalgia Critic. He remembers it, so you don't have to.
CAJ Cosplay as Poison Ivy.
Thugg Cosplay as Psylocke.
The creepiest costume I saw all day - Zombie Ariel - The Little Mer-Zombie!
Logan, Black Cat and Spider-Man.
Castiel from Supernatural
Amy Pond from Doctor Who.
This Slave Leia seems far too cheerful about her captivity.