Personalized Sweet Sixteen SS Youth T-Shirt. Sweet 16th birthday Youth T-Shirt - Heather with 2 pink S's that make a pretty heart, a cute pink flower and text that says SWEET SIXTEEN. Let the good times roll in a durable T-Shirt that takes kids from school to play in an amazing array of colors. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar.