It's clearly Dree Hemingway for me. Let's analyse this. It's a fairly new girl; which means that Fall 2009 was her breakout season and Spring 2010 was her first season. Dree walked exclusive for Givenchy for her first season and in her second season walked a handful of top shows.
Second of all, you know whoever Vogue Paris heavily features is a favourite of either Inez&Vinoodh or Mert&Marcus. Dree shot campaigns with both of them for Spring 2010. And has shot extensively with Inez&Vinoodh (a Purple nude feature, Gucci) which are a Vogue Paris staple.
Thirdly; Dree has the name. Hemingway. I can easily see Vogue Paris milking this for all its worth. They could, although its unlikely, do a tie in with Ernest and his stories. My guess is that they'll shoot something at the Ritz and the Bar Hemingway.