Aph uses a ton of content form various artists.  a lot of it a recognize as not being starwars specific (aside from the lightsabers, lekku etc).  I think there is a lot of Alpha Seed content (RDNA) and other cool sci fi stuff.  The trick is having a large stable of content to draw from.  Some things you might own a whole set that you only use the boots.. or the gloves.. or just the top ..   Mixing and matching makes a big difference to capturing exactly the theme you want for your outfits.

There is a some free starwars specific stuff around as mentioned already.  

One thing you should be prepared for though, is that Aph puts a lot of work into her renders, I wouldnt expect to get the same results by just loading and rendering the same products.