Personalized My First Valentines Day T-Shirt. It's baby's 1st Valentine's Day! This adorable kitten is surrounded with hearts and lots of love. Happy first Valentine's Day, little one! Everyone loves our Custom T-Shirts! 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.