Reasons Why Designers and Show Organizers Prefer To Use Slim Models For Runway Shows

At first glance, the idea that designers choose slim models to save fabric may seem exaggerated. After all, a single dress does not consume a drastically different amount of material depending on whether it is a UK size 6 or 14. However, when looking at an entire collection—often consisting of 15 to 30 outfits—fabric use becomes a crucial factor. Runway garments are typically made from premium materials, and the costs can add up when producing larger sizes across multiple looks. By keeping slim models within a uniform size range, designers can maintain control over fabric use and reduce excessive expenditure on textiles.

A model’s body is essentially a canvas for the designer’s creation, and a slimmer frame allows for an unobstructed display of the garment’s structure and details. While curvier figures may enhance the appeal of certain designs that might not work on other figures that don’t have such curves. Also, they can also alter the way an outfit drapes or fits, potentially overshadowing the intended silhouette. The goal is for all audience members—whether they have curvy or slim physiques—to be able to envision the outfit on themselves without distraction. A straight, non-curvaceous body ensures that the garment remains the primary focus of attention.

Most runway pieces are prototypes, meaning they will be used multiple times across various shows and photoshoots. This requires models to fit into the same sample sizes seamlessly. The challenge with curvier figures, for example a size 14, is that body proportions can vary significantly. For example, two models who both wear a UK size 12 may have vastly different distributions of weight—one may have a fuller bust while another may have wider hips or a rounded stomach. This makes uniformity difficult and necessitates frequent alterations. In contrast, sizes 6-8 tend to be more consistently proportioned, allowing designers to move garments between different models with minimal adjustments.

Fashion shows are meant to highlight clothing, not the physical attributes of the models. When models are selected based on their curves & sex appeal rather than their ability to showcase a design, the audience’s attention can shift away from the collection itself. While curvy models undoubtedly bring confidence and beauty to the runway, designers may fear that their presence could create an imbalance where spectators focus more on their bodies than on the artistry of the garments.

A cohesive runway presentation is key to ensuring that the audience stays engaged with the designs rather than being distracted by inconsistencies in model appearances. This applies to body type, height, and even styling elements such as hair and makeup. When models vary significantly in shape, height, or build, the audience’s focus may shift from the clothing to the unpredictability of each new model. Various models on the runway could easily grab attention and have spectators focused on which body type is next. By maintaining a uniform look—whether with slender, plus-size, or tall models—fashion houses ensure that attention remains ignores the models (seen it once, seen it all) and is fixed on the garments rather than the differences between the individuals wearing them.