Twihards are obviously in a tizzy over the shocking (shocking!) revelation this week that Kristen Stewart had cheated on her sparkly vampire-playing boyfriend Robert Pattinson with the director of "Snow White and the Huntsman," Rupert Sanders. Rob has supposedly moved out of the couple's LA house and, in those fans' dreams, nursing his broken heart by reading their psychotically supportive tweets. But what about the other person hurt by Stewart and Sanders' "marathon makeout session" -- Sanders' wife Liberty Ross? Who is she? Here's what we know about her...