Personalized I'm Going To Be a Big Cousin Elephant T-Shirt. Our "Big Cousin To Be" line includes everything from newborn baby outfits to matching cousin shirts for boys. With a neutral black and white color scheme, these items are versatile and can be worn by anyone in the cousin crew. The funny "Big Cousin Est." design adds a touch of humor to the mix, making it a great choice for kids of all ages. Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.