Personalized 1st Birthday Unicorn Kitty Women's V-Neck T-Shirt. Adorable rainbow unicorn kitty celebrates your baby's 1st birthday. I'm One! Cute first birthday gift for your one year old. 5.0 oz., 100% pre-shrunk cotton Athletic Heather is 90/10 cotton/polyester 1x1 rib collar with mitered v-neck Shoulder-to-shoulder taping Ladies' fit