Personalized Funny Halloween Costume Novelty Apparel Witches Be Trippin' T-Shirt. This Halloween, make a statement that is as fun as it is fashionable, and let the world know that you’re ready to embrace the magic of the season. Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.