Personalized Westie Halloween Party Youth Long Sleeve T-Shirt. KiniArt Westie Halloween Party by Artist, Kim Niles. Westie Art ©️Kim Niles, KiniArt™️ - All Rights Reserved. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)