What character should I go as to Halloween party?

I bought a long blonde wig - the white powder and shimmer and everything else to go as Rosalie Cullen - when i found out that so many others plan to be some sort of Cullen at the same party as well. I thought of True Blood "sookie" but i already have so much make up and effects for face and body that i need a sort of gory - dead character. I love VAMPIRES but it seems everyone does and i hate being unoriginal. I also considered a dead Marilyn Monroe??? Please help!!!!!!!!