While visiting Charleston, I expected to see some variety in the accessories department. But no - all the rich moms I saw were carrying this bag style, and it's the same look Kate Middleton rocks nonstop. Preppy and luxe, this bag looks mega expensive, yet runs for just $30 on Amazon. The Princess of Wales made the Longchamp Le Pliage her signature bag years ago, and the appeal makes sense. Not only is it refined, but it's also very practical. This Amazon bag is eerily similar, with the same lightweight feel, packable design and clean, minimal silhouette that makes any outfit look polished.