'Five, six, seven, eight, who do we appreciate?!' Throwback pictures of celebs in their high-school cheerleading costumes, that's what. Aside from the fact the whole varsity/cheerleading vibe is totally having a moment right now (as seen on Iggy Azalea at the Billboard Music Awards last month), there's also a good chance you're going to find yourself cheering on your national team in a certain little Brazil-based football event over the next four weeks. So you might as well get in the spirit of things with beauts like Cameron Diaz, Blake Lively, Jennifer Lawrence and Alicia Silverstone. We ballin'.