I don't always Nekros a thread...but when I do, I tend to have a good reason for it. I'd say this qualifies, no?

Alternate shot showing her belt:
[spoiler]

[/spoiler]
Download for those interested: Ruby Rose Outfit
A couple important notes on the mod:
- This is a loader mod. I had to make it using a Loader template in order to get it to do what I wanted it to do. As such, you will need the SDT Loader in order to use it. You can download the Loader at that link (if you haven't already got it - since I wasn't able to make this in Vanilla as I had originally hoped, making it "user-friendly" will instead be achieved by me posting a brief tutorial here on how to implement the mod into your game...as I originally found this site because of images of the RWBY girls in SDT and they piqued my curiosity before I fell down the rabbit hole into this madness).
- The hair is not included in the .swf download. It was originally made by Maineim and can be found here: Stuff by Maineim (2-2-14 RWBY's Penny)
A brief tutorial on "how 2 Loader" to help those who need it will follow. If you already know, you can skip the rest of this post.
[spoiler="How to Use the Loader"]
So you've downloaded the Loader using the above link to its thread and you're greeted with something like this:

to add a mod, go into the Mods subfolder. That folder will look like this except without the red box:

Once here, you'll need to make a new folder (button highlighted in red). Name the folder 'Ruby' (or whatever you want, I'm using Ruby for the sake of this exercise):

Then, open the CharacterFolders.txt file (boxed in red). You'll see a notepad file (I assume, unless you're on a Mac in which case you'll see whatever program they use to view .txt files) which has the names of all the subfolders in the Mods folder except INIT, OVER, and RESET. You'll want to add the line "Ruby:Ruby" to the file as I have done in the next image:

I don't believe it matters where you put it but I like mine alphabetical - that's why I put it where I did. All you need to do now is put the necessary files in the Ruby folder and you're good to go. Here's what mine looks like:

In the above picture: Char.swf is the Ruby outfit mod I've made (renamed from Ruby.swf for the folder), Hair.png is Mainem's Ruby hair (can be found at the link above, back outside the spoiler cloud), and Thumb.png is a custom icon I made (by taking a Printscreen of Ruby in SDT and cropping it down to her face) that displays in the character select menu in SDT. Recommended size for a Thumb.png is around 100x85, but it doesn't need to be exactly that.
Hopefully this covers everything. Any additional questions can be PM'd to me (and should, no need to clutter this thread with questions like "how do I do X?" when X doesn't further the cause of more RWBY content being made for SDT). There's also plenty of other literature around to be used for guidance such as this thread: [W.I.P] SDT Tutorial for Very Newbie User
Have fun. :)[/spoiler]