Personalized I Love Unicorns Youth Long Sleeve T-Shirt. Cute unicorn Youth Long Sleeve T-Shirt - White with heart says I HEART UNICORNS (I LOVE UNICORNS). Life is magical. Gifts for unicorn lovers. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)