Personalized 4th Birthday Fourth of July Holiday Cupcake Youth T-Shirt. Cute red white and blue birthday cupcake with number 4 for a 4th birthday comes on a Youth T-Shirt - White 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.