What to be for Halloween!!?? HELP

I was thinking maybe Helena (not me the one from MCR) or Corpse Bride, but they are very intense I feel.  My sister likes the idea of black swan since she thinks I look like Natalie Portman (XD I WISH).  I feel like I am learning more towards like Fun Ghoul or something though.

Also I had bleached my hair on the tips some, very "Sixx" trad I gotta admit, but I want to go all black soon.