Personalized 7th Birthday Twins Owl Party Photo Youth T-Shirt. 7th Birthday twins Youth T-Shirt - Azalea cute party photo tee with colorful owls and balloons and it's our 7th birthday quote. 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.