Personalized Little Sister Unicorn Women's V-Neck T-Shirt. Little Sister Unicorn - A cute little sister unicorn prances with a heart on her cheek in a rainbow filled sky. Cute gift for any little sis! 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