Shop our best-selling style, season after season - The Diagonal Dress. Available in a heavier weight winter version and a lighter weight summer version. Choose from 3/4 sleeve, long sleeve, or short sleeve. Crafted from a high quality stretch cotton and designed in a comfortable shape, so you can feel and look your best. The Diagonal Seam Dress by Tirelli is sure to become a timeless essential in your wardrobe.