Model is the Ukrainian actress & supermodel Olga Kurylenko from the film 'Centurion' (2010) (nothing to do with Botohui-tarhun, of course).
http://www.imdb.com/title/tt1020558/
Still, since so many Genghis Khan movies have been made over the years, they should definitely make a movie about Botohui-tarhun! And who else should star in it!