What is a Fit Guide?

You need a soft tape measure and ideally a helper, though self-measurement is possible. Measure over lightweight clothing or undergarments, not over bulky layers. For chest/bust, wrap the tape around the fullest part of the chest under the arms. For waist, measure at the natural waist — the narrowest point of the torso, usually about an inch above the navel. For hips, measure at the fullest point of the hip and buttock area. For inseam, measure from the crotch seam of a well-fitting pair of pants to the bottom of the hem. For shoulders, measure from shoulder point to shoulder point across the back. Record these numbers and update them annually or after significant body changes.

There is no universal sizing standard in the fashion industry. Each brand creates its own size chart based on their target customer's body proportions, and these charts can vary by several inches across brands. Additionally, vanity sizing — the practice of labeling garments with smaller numbers than the actual measurements — has shifted sizing progressively over decades, and different brands participate in this trend to different degrees. This is why knowing your actual body measurements matters more than memorizing a size number. Compare your measurements to each brand's specific size chart rather than assuming your size at one brand will hold at another.

These labels describe how much ease — extra room beyond your body measurements — a garment includes. Slim fit adds minimal ease, typically one to two inches, creating a close-to-body silhouette that follows your shape. Regular or classic fit adds moderate ease, usually two to four inches, allowing comfortable movement without clinging. Relaxed fit adds generous ease of four or more inches, creating a loose silhouette with significant room. None of these is inherently better — the choice depends on personal preference, body comfort, activity level, and style intention. The important thing is that the fit category is chosen deliberately rather than being the accidental result of grabbing the wrong size.

Before adding anything to your cart, find the brand's size chart — usually linked near the size selector. Compare your body measurements to the chart, not your size at other brands. Pay attention to the garment's intended fit description (slim, regular, oversized) and adjust accordingly — if you want a relaxed feel in a slim-fit garment, you may need to size up. Read reviews specifically for fit comments — phrases like runs small, runs large, or true to size are gold. Check the model's measurements if provided and compare to your own to visualize the fit. Finally, check the return policy before purchasing, and when in doubt between two sizes, order both to compare.