Personalized Baby's First Christmas T-Shirt. Create lasting memories this Christmas with our Baby's First Christmas apparel. Whether it's for a holiday party or a cozy day at home, this outfit is sure to bring smiles and laughter. Dress your little one in style and celebrate their first festive season with joy! 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.