Choosing the right t-shirt size makes all the difference between a tee that looks thrown-together and one that looks intentional. Start by checking the brand's specific size chart rather than assuming your usual size applies, since fits vary widely between regular, slim, and oversized cuts. Measure a t-shirt you already own and love across the chest, length, and shoulders, then compare those numbers to the size guide before you buy.
If you're torn between two sizes, think about the look you're going for. A true-to-size fit works best for layering or a smarter, tailored appearance, while sizing up gives you the relaxed, streetwear-inspired drape that's popular right now. Fabric matters too: heavier cotton holds its shape and drapes differently than lightweight blends, so factor that into your decision alongside the numbers on the chart.