Personalized Birthday Girl Cupcake T-Shirt. Make your baby's first birthday unforgettable with our charming and stylish birthday outfits. From cute dresses to dapper suits, we have everything you need to dress your little one for their special celebration. Shop our 1st birthday outfits now and create precious memories that will last a lifetime. 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.