Personalized Baby's 1st New Year T-Shirt. Baby's 1st New Year's T-Shirt - White has little boy in tuxedo with party hat and It's My 1st New Year's holiday slogan. 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.