Personalized Las Vegas 16th Birthday Women's V-Neck T-Shirt. Las Vegas sign 16th birthday Women's V-Neck T-Shirt - White says IT'S MY FABULOUS SWEET 16TH BIRTHDAY. 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