The Ultimate London Packing Guide — From a Chic Trench Coat to a Spacious Suitcase

Popsugar Packing Cubes ($25)

Any fashionista will know it's not how big your suitcase is — it's how you pack it. Trust me when I say that packing cubes are a nonnegotiable to maximize space and efficiency. I love this four pack of bags because they're all different shapes and sizes, giving you the most variety for places to store areas of your wardrobe.