Not too relevant, but there is a website called Polyvore http://www.polyvore.com where people make collages of clothing and things based on certain people/places/television shows/movies/etc.
There's loads on there and if you see something you like it tells you the price and where you can buy it.
It is important if you're looking for the collages to search "sets" as opposed to the automatic "products" category.
I've spent a good few hours trawling through this website - they have collages for pretty much everything!
Check it out if you don't already use it - it's really cool