I stumbled across the Polyvore website where you can style create your own style sheets. You search their database of images and paste in whatever you want. It also has links to where you can purchase the items.
The entire outfit above would set me back about $700. Okay I left off the Cartier tank watch because I don't think I'm ready to sell my car in order to afford one of those.
Now I wouldn't actually spend $700 on that outfit but not all the pieces were pricey. For example that cardigan comes from Old Navy for $35. The t-shirt is James Pearse and retails for $115. I cannot fathom spending more that $15 on a t-shirt.
You aren't limited to just fashion either - you can do interior style sheets too.
You can browse other peoples sets and if you pick an item you can see what sets it has already been used in. Mine are really simple - some that I saw are so detailed and professional looking.
You've been warned ~ it's a total time sink but lots of fun.