Personalized Unicorn 2nd Birthday Toddler Long Sleeve T-Shirt. Unicorn 2nd birthday! Cute unicorn with a flowing pink mane stands on a rainbow in the clouds surrounded by stars. Adorable gift for the two year old! A classic for Fall, Winter and Spring, these long sleeve toddler t-shirts are sure to be a staple in your child's wardrobe. Whether layered or alone, this t-shirt is soft yet durable enough to stand up to your toddler's playtime demands.