Personalized 1st Mothers Day Outfit Boy Girl T-Shirt. Cute it's my 1st Mothers Day hen and chick T-Shirt - Navy Blue for baby boy or girl. 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.