Well, it had to happen some time. It's one of those Disney fan-crossovers where identifying who's who exactly takes a bit more time. It's such a diverse cast, but artist Sam Tsui on DeviantART didn't have much problem with it and remade everyone as medieval fantasy characters from Game of Thrones.
Here's some of the most recognisable princesses. Check out's the artist's gallery for more.
Disney Princesses as Game of Thrones by DjeDjehuti [DeviantART]