Personalized Blooming 60th Birthday Youth Long Sleeve T-Shirt. 60th birthday Youth Long Sleeve T-Shirt - White with whimsical number 60 covered with flowers and leaves says 60 AND STILL BLOOMING! Perfect for over the hill florists and gardeners. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)