When choosing the fabric for your 3-piece suit, consider both aesthetic and practical aspects. Aesthetically, the fabric should be high-quality with a texture and colour that complements your skin tone and the occasion. Practically, consider the durability and comfort of the fabric, as well as its appropriateness for the season. For example, heavier fabrics like wool and tweed are suitable for colder months, while lighter fabrics like linen are ideal for warmer seasons.