How To Be A Vivian Sternwood

Halloween is soon approaching and costume ideas are passing by and I am just altogether running out of time.
I have gone through many ideas and one has stuck with me. 
I have just recently finished Sparknote-ing the book The Big Sleep and I have come to love the whole femme fatale theme.

SO
for Halloween, my goal is to be one of these ladies.

The sultry, the smolder, the red lip stick at 1:42 AM with a Photo Booth coloured pencil effect! *sigh*

Next step, how do dress like one.
I don't want to be, yea know, (sluty), but I want people to understand what I am...

Huh.
This is going to be a lot harder than I thought.