Personalized First Birthday Unicorn Outfit for Girl Adult Sweatshirt. Cute unicorn with flowers and I'm one quote for baby's first birthday comes on a Adult Sweatshirt - White. 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.