Irish Tuxedo T-Shirts - St. Patrick's Day . These popular tuxedo t-shirts are now available in Kelly Irish green, hunter green, black, and white just in time for St. Patrick's day! Whether you are going for the leprechaun look or just something a little more novelty, formal these are the shirts for you! These shirts are perfect for St. Patrick's day or every day! Wear these Tuxedo Shirts to the prom, your wedding, or any party where a tuxedo is required. Our Tuxedo Men's T-Shirts are made from a 100% fully machine washable preshrunk cotton for a cool and comfortable fit every time.