We know it's not fair, but ... Kate Upton vs. Marissa Miller. Both of these swimsuit beauties know how to work it for the camera, but who does it better?!
From COED Magazine: "Choosing loyalties between these two is harder than a Red Sox fan having to give up his love for Johnny Damon. Of course, we've got enough love for Kate and Marisa, but now you can choose your own favorite, if that's possible..."