No matter what, great flip flops will always be in style. They can dress down a fancy dress, peek out under a pair of jeans, or even be worn purely for comfort (and they're much more acceptable than those ridiculous crocs).
Rather than just throw on a pair of black or brown flops, I like to opt for something unexpected for a bit of flair. These animal print sandals by Express ($29.50) do just the trick. In addition to the great animal prints that just barely can be seen when you wear 'em, the thong portion of the sandal is metallic--a trend that we'll still be seeing this season in moderation.