Personalized I'm Four Kitty Cat 4th Birthday Women's V-Neck T-Shirt. Say happy 4th birthday with this adorable kitten in a pocket design with I'm Four slogan on a four year old Women's V-Neck T-Shirt - Aqua. 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