Have Marcia Cross' Hats Taken Over The World?

All of a sudden, everyone is wearing hats this summer! First it was just Marcia Cross (and, well, Britney Spears - that's an odd combo!), but now so is Lindsay and Paris, even Ashlee Simpson and Kimberly Stewart. We even just spotted Hairspray "heartthrob" Zac Efron wearing one! When will the madness end? Only on a bad hair day should you wear a hat, or if what you're wearing is so outrageous, you need a hat to distract from it, as is the case with the following pic below the cut...