In "Bergdorf Blondes," author Plum Sykes references the saying "waste not, want not," originally created by the British during wartime to encourage children to finish their food. Sykes uses this expression to highlight a modern perspective on spending. Instead of focusing on traditional notions of frugality, she humorously suggests that one should avoid wasting money on mundane expenses like rent.

Instead, Sykes advocates for directing finances toward more enjoyable purchases, such as trendy clothing. This playful take on a well-known adage reflects a lifestyle choice that prioritizes personal enjoyment over conventional responsibilities, revealing a lighthearted attitude towards consumerism.