Personalized Born to be a Unicorn T-Shirt. Born to be a Unicorn! You're cute, you love rainbows, you sparkle, and you're magical. You're basically a unicorn. 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.