Long shot, but I don't have a lot of time to comb through people's albums:
Friday: Natsuki (Summer Wars) bunny girl with red on top/blue hakama
Saturday: Pink Ugly Stepsister- I was mostly photographed as part of a large group of Disney villains
Buttercup, red dress. I was with a Dread Pirate Roberts (Princess Bride)
Sunday: Merida (Brave) with crazy '80's hair. I was mostly hanging out with the historical costumed Belle, Aurora and occasionally Snow White
Jumpsuit Kaylee, with a Wash (Firefly). He had little dinosaurs and a blue hawaiian shirt.
If you have a photo, I'd appreciate a PM. I'll credit you in my albums!