Personalized 1st Mardi Gras Jester Hat Childs Party T-Shirt. it's my 1st Mardi Gras T-Shirt - Navy Blue for a boy or girl has green gold and purple jester hat number 1 logo for celebrating a holiday with family. 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.