Personalized Me 1st St. Paddy's Day Long Sleeve T-Shirt. 1st St. Patrick's Day Long Sleeve T-Shirt - White with a cute baby wearing a diaper in a green T-shirt, holding a shamrock rattle. He says IT'S ME FIRST ST. PADDY'S DAY. Pre-shrunk 100% cotton 6.1 ounce long sleeve t-shirt. Double-needle stitched neckline and sleeves. Quarter turned. Shoulder-to-shoulder taping. Adult: S, M, L, XL, 2XL, 3XL