Personalized Cute Cupcake 1st birthday T-Shirt. Make your baby girl's or baby boy's 1st birthday extra special with our unique outfit. This outfit is not only stylish but also practical for your little one to move around and play in. Get ready to celebrate this important milestone in style with our 1st birthday outfit! 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.