Personalized Westie Halloween Party Youth T-Shirt. KiniArt Westie Halloween Party by Artist, Kim Niles. Westie Art ©️Kim Niles, KiniArt™️ - All Rights Reserved. Let the good times roll in a durable T-Shirt that takes kids from school to play in an amazing array of colors. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar.