Personalized 1st Birthday Tuxedo Penguin Toddler Long Sleeve T-Shirt. Happy 1st birthday! This cute penguin celebrates a baby boy's first birthday. Complete with a classy tuxedo! Personalize and add your baby's name. 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.