Personalized Irish At Heart Women's Plus Size T-Shirt. St. Patrick's Day Women's Plus Size T-Shirt - White with a heart shaped shamrock says IRISH AT HEART. You can be Irish too, even if it's only for the day. Perfect for family celebrations, St. Patrick's Day parades or any time. 100% combed ringspun cotton premium jersey (CVC Colors are 60/40 combed ringspun cotton/polyester)