This Sunday, you'll be signing your checks (if you still write them...) 10/10/10, and in honor of this perfect ten occasion, we're declaring a holiday! After all, who doesn't love a top ten list? We picked our favorite gowns from the last ten years—and it wasn't easy. Playing favorites with a decade of red carpet creations from designers like Dior, Valentino and Chanel forced some hard decisions. Click through the gallery for our stunning results —and enjoy this binary holiday!