Personalized Christmas Snowman Big Bro Announcement Youth Long Sleeve T-Shirt. I'm snow happy I'm going to be a Big Bro adorable snowman sibling announcement Christmas holiday Youth Long Sleeve T-Shirt - Royal Blue outfit for boys. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)