Hi my friend.
Here my Selen and she's not expensive compare to sixicecubes :
I will try to help you as much as I can, here my recipe :
I bought the wetsuit from figuremonsterdepot on Ebay.
I started from the 12" Sideshow Anna Valerious and I just keep the corset and the entire body/head.
You don't need to buy another corset, bur for a better balance, you will have to cut the belly of the Sideshow (about 8mm : 4mm, navel, 4mm).
And maybe her thigs and legs too 5mm each.
Use Apoxie sculpt to keep the line 'cause the suit is very tight.
Then you will have a normal female size and the corset will cover enough her breast and her hips.
You will have to modify the corset, cutt off the button and add some clips on each side and paint it in black.
If you can repaint the face to give a pale vampire skin and her specific cold blue eye.
One trick is to not switch her head to a Takara body or she will looks like Mr. Mackey from Southspark.
The hardest part was to make her hair straight, good luck about that.
The boots comes from 12" Jinx and add some leather lace all around, but you can almost use any boots as long as they don'y have high heels.
The holster comes from Mulder/Scully glued on her suit.
I don't know if you want to have her leather coat, in my case, I prefer her without cause the coat will hide her silhouette and if you can find the pictures of her real coat, it's full of details, a regular coat won't be enough.
Here you go, I give you my recipe, you can now start your own Selene but remember, you can start from the Sideshow Valerious.
Hope it helps, good luck.