Personalized 9th Birthday Unicorn T-Shirt. Celebrate a magical 9th birthday with this adorable unicorn hugging a colorful rainbow number 9. This cute and whimsical T-Shirt - White is perfect for any young unicorn lover. Featuring vibrant colors and a joyful design, it's sure to bring smiles on this special day. 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.