Personalized Irish Princess Childs Cute T-Shirt. Cute Irish Princess St. Patrick's Day design T-Shirt - Kelly Green for girls has green shamrock clovers and sweet red haired girl wearing a crown. Everyone loves our Custom T-Shirts! 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.