Personalized 4th Birthday Unicorn Rainbow Cute Girls Toddler Hoodie. 4th Birthday Toddler Hoodie - Royal Blue has adorable pastel rainbow with happy unicorn and I'm 4 slogan, perfect for a little girl turning four. The Toddler Pullover Fleece Hoodie keeps little ones cozy and comfortable through all their adventures. Made with soft fleece and a smooth jersey-lined hood, it’s perfect for layering on chilly days. Ribbed cuffs and waistband help hold in warmth while side seam pockets add a touch of practicality for busy toddlers on the go.