A summer dress in cotton lawn, linen, or cotton blend keeps you cool while maintaining formality through design rather than weight. Lightweight fabrics are essential for warm weather christenings because they move air and prevent overheating. Look for summer dresses made from natural fibers or quality blends that breathe properly. Linen is practical and elegant but wrinkles are part of the fabric character. Cotton lawn is smooth and refined. Cotton linen blends offer a compromise between wrinkle resistance and breathability. The fabric weight matters less than the fiber content when it comes to staying cool. A summer dress in lightweight fabric demonstrates that comfort and formality work together.