Personalized We're One Twin Boy & Girl Women's V-Neck T-Shirt. Polka dots around a twin boy and girl with rosy cheeks say WE'RE ONE 1st birthday Women's V-Neck T-Shirt - White. 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