Let’s face it — few of us will ever be Jackie O., and if anyone will be, it will be me. But that doesn’t mean that the rest of you can’t rock just as nice a hat, and that, on the off chance that I am not heralded as her second coming, I can’t also summer with my head appropriately adorned. Let’s take a look at some of the best options this summer for blocking the sun and retaining the mystery of what your eyes are saying.