Personalized Irish Princess St Patricks Girls T-Shirt. Irish Princess T-Shirt - Navy Blue has darling red haired princess girl with lots of green four leaf clovers surrounding her. Perfect gift for St. Patrick's Day parties. Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.