Based on hollywoodlife.com report: Kristen plays Charlize’s arch-nemesis in their upcoming fairytale flick, but this rivalry isn’t just acting for the silver screen — are you shocked? Don’t expect Kristen Stewart and Charlize Theron to become besties. HollywoodLife.com noticed some awkward tension between the Snow White and Huntsman co-stars at Comic-Con on July 25, so we asked our top body langu…