Personalized St Patricks Day Auntie Leprechaun Irish Youth Long Sleeve T-Shirt. Cute Auntie's little leprechaun Youth Long Sleeve T-Shirt - Royal Blue outfit with Irish boy dressed in green for a St Paddys Day holiday. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)