(1) Emily Ratajkowski v. (4) Kourtney Kardashian
Let's be honest: This is the first TRUE challenger that I think either of these women have faced in this competition so far. (Emily dispatched Haley Bennett easily; Mel B put up more of a fight, but her bedazzled catsuit could only take her so far; Kourtney schooled both Shay Mitchell, and Fergie.) We're about to find out who really might have the goods to take this thing to the very end.