Personalized Cowboy Groom's Posse Toddler Long Sleeve T-Shirt. Cowboy groom's posse! A country western themed wedding has groomsmen who are cowboys, and together they make a posse for the newlywed groom! For when a cowboy and cowgirl get hitched. 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.