Personalized Our First Christmas Twins Elf Outfit Toddler T-Shirt. Celebrate baby's 1st Christmas with this adorable elf design for your twin boys or twin girls. A toddler-soft cotton tee in look-at-me, big kid colors. 4.5 oz., 100% combed ringspun cotton. White is sewn with 100% cotton thread. Topstitched rib crew neck. Double-needle stitched sleeves and bottom hem. Shoulder-to-shoulder taping.