Personalized Cowboy Big Bro Youth T-Shirt. Big bro Youth T-Shirt - White for your little buckaroo with sheriff's star, horse and cowboy hat. Inside of star says BIG BRO. 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.