Personalized Mardi Gras 1st Birthday Adult Sweatshirt. Mardi Gras IT'S MY 1ST BIRTHDAY Mardi Gras Adult Sweatshirt - White with big number 1, purple Mardi Gras beads and purple and gold jester hat. Graphics by JW Illustrations. Stay warm and stylish with this classic adult sweatshirt, perfect for everyday comfort. Crafted from soft, durable fabric, it features a relaxed fit for added coziness. Whether you’re lounging at home, running errands, or enjoying outdoor activities, this versatile sweatshirt is a wardrobe essential for any season.