Sometimes it's just so hard to establish if an online store is legitimate or not. You really have to have your facts right in order to know if you are dealing with a party that is selling authentic stuff or not. On the other hand, in some occassions, it's just too easy to spot a fake. In this case you can easily see you're dealing with fakes here...
This is the homepage of an online shop selling shoes called ourshoesbox.com. They sell many fake designer shoes among which a lot of fake Christian Louboutin shoes.
Does this layout seem familiar to you? Well, it looks a lot like this famous online designer shop!
Check out the layout of the famous webshop
Net-a-Porter.com. See the similarities?
Well, I think I might have even seen the picture on the homepage of Ourshoesbox.com before... Oh, wait a minute! It's copied from Net-a-Porter's online magazine of earlier this year!
Oh, and well, the layout on the other pages of the website also looks a lot alike...
The counterfeitsite Ourshoesbox.com:

Net-a-porter's site:

The fake Christian Louboutin you would like to order is currently not in stock. But maybe you want to ple-order? It might be a bit difficult to read, but it actually says ple-order, instead of pre-order!!!

Ok, one more clue on how to know that we are dealing with fakes here: the price? It seems a bit low don't you agree?
Check stopfakelouboutin.com to see if a website is selling fake Louboutins or not! Please don't ever buy fakes!