Personalized Sister of the Groom blue wedding Toddler Long Sleeve T-Shirt. Sister of the Groom blue Wedding Butterfly Toddler Long Sleeve Tee - White gift for your bridal party. Lovely blue butterfly marriage logo. 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.