Personalized 3rd Birthday Rocks Princess 3 Year Old Adult Sweatshirt. 3rd Birthday Princess Adult Sweatshirt - White has polka dot number three with princess crown design and 3 rocks slogan. 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.