Personalized Faux Rhinestone 21st Birthday Toddler Long Sleeve T-Shirt. 21st birthday Toddler Long Sleeve Tee - White with a shimmering, glittering, sparkling, silver, FAUX rhinestone number 21. Perfect for her 21st birthday! 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.