Personalized 20th Birthday Rock and Roll Women's V-Neck T-Shirt. Funny 20th Birthday Women's V-Neck T-Shirt - White has blue and green Rockin and Rollin My 20th Birthday quote for someone turning 20. 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