I see Allison 10 in the thumbnail, and I don't see Brit at all. In the large version I still see a little Allison, but I wouldn't bet money that this is her, either.
This is not Brittany Markert--our Brittany has a shorter, more squared-off jaw than this girl. In fact, this photo looks more like Brittany Brower from Cycle 4... maybe this file was uploaded to the wrong portfolio?